![Kees Cook](/assets/img/avatar_default.png)
The kzalloc() function has a 2-factor argument form, kcalloc(). This patch replaces cases of: kzalloc(a * b, gfp) with: kcalloc(a * b, gfp) as well as handling cases of: kzalloc(a * b * c, gfp) with: kzalloc(array3_size(a, b, c), gfp) as it's slightly less ugly than: kzalloc_array(array_size(a, b), c, gfp) This does, however, attempt to ignore constant size factors like: kzalloc(4 * 1024, gfp) though any constants defined via macros get caught up in the conversion. Any factors with a sizeof() of "unsigned char", "char", and "u8" were dropped, since they're redundant. The Coccinelle script used for this was: // Fix redundant parens around sizeof(). @@ type TYPE; expression THING, E; @@ ( kzalloc( - (sizeof(TYPE)) * E + sizeof(TYPE) * E , ...) | kzalloc( - (sizeof(THING)) * E + sizeof(THING) * E , ...) ) // Drop single-byte sizes and redundant parens. @@ expression COUNT; typedef u8; typedef __u8; @@ ( kzalloc( - sizeof(u8) * (COUNT) + COUNT , ...) | kzalloc( - sizeof(__u8) * (COUNT) + COUNT , ...) | kzalloc( - sizeof(char) * (COUNT) + COUNT , ...) | kzalloc( - sizeof(unsigned char) * (COUNT) + COUNT , ...) | kzalloc( - sizeof(u8) * COUNT + COUNT , ...) | kzalloc( - sizeof(__u8) * COUNT + COUNT , ...) | kzalloc( - sizeof(char) * COUNT + COUNT , ...) | kzalloc( - sizeof(unsigned char) * COUNT + COUNT , ...) ) // 2-factor product with sizeof(type/expression) and identifier or constant. @@ type TYPE; expression THING; identifier COUNT_ID; constant COUNT_CONST; @@ ( - kzalloc + kcalloc ( - sizeof(TYPE) * (COUNT_ID) + COUNT_ID, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(TYPE) * COUNT_ID + COUNT_ID, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(TYPE) * (COUNT_CONST) + COUNT_CONST, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(TYPE) * COUNT_CONST + COUNT_CONST, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * (COUNT_ID) + COUNT_ID, sizeof(THING) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * COUNT_ID + COUNT_ID, sizeof(THING) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * (COUNT_CONST) + COUNT_CONST, sizeof(THING) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * COUNT_CONST + COUNT_CONST, sizeof(THING) , ...) ) // 2-factor product, only identifiers. @@ identifier SIZE, COUNT; @@ - kzalloc + kcalloc ( - SIZE * COUNT + COUNT, SIZE , ...) // 3-factor product with 1 sizeof(type) or sizeof(expression), with // redundant parens removed. @@ expression THING; identifier STRIDE, COUNT; type TYPE; @@ ( kzalloc( - sizeof(TYPE) * (COUNT) * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kzalloc( - sizeof(TYPE) * (COUNT) * STRIDE + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kzalloc( - sizeof(TYPE) * COUNT * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kzalloc( - sizeof(TYPE) * COUNT * STRIDE + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kzalloc( - sizeof(THING) * (COUNT) * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | kzalloc( - sizeof(THING) * (COUNT) * STRIDE + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | kzalloc( - sizeof(THING) * COUNT * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | kzalloc( - sizeof(THING) * COUNT * STRIDE + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) ) // 3-factor product with 2 sizeof(variable), with redundant parens removed. @@ expression THING1, THING2; identifier COUNT; type TYPE1, TYPE2; @@ ( kzalloc( - sizeof(TYPE1) * sizeof(TYPE2) * COUNT + array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2)) , ...) | kzalloc( - sizeof(TYPE1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2)) , ...) | kzalloc( - sizeof(THING1) * sizeof(THING2) * COUNT + array3_size(COUNT, sizeof(THING1), sizeof(THING2)) , ...) | kzalloc( - sizeof(THING1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(THING1), sizeof(THING2)) , ...) | kzalloc( - sizeof(TYPE1) * sizeof(THING2) * COUNT + array3_size(COUNT, sizeof(TYPE1), sizeof(THING2)) , ...) | kzalloc( - sizeof(TYPE1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(TYPE1), sizeof(THING2)) , ...) ) // 3-factor product, only identifiers, with redundant parens removed. @@ identifier STRIDE, SIZE, COUNT; @@ ( kzalloc( - (COUNT) * STRIDE * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - COUNT * (STRIDE) * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - COUNT * STRIDE * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - (COUNT) * (STRIDE) * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - COUNT * (STRIDE) * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - (COUNT) * STRIDE * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - (COUNT) * (STRIDE) * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - COUNT * STRIDE * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) ) // Any remaining multi-factor products, first at least 3-factor products, // when they're not all constants... @@ expression E1, E2, E3; constant C1, C2, C3; @@ ( kzalloc(C1 * C2 * C3, ...) | kzalloc( - (E1) * E2 * E3 + array3_size(E1, E2, E3) , ...) | kzalloc( - (E1) * (E2) * E3 + array3_size(E1, E2, E3) , ...) | kzalloc( - (E1) * (E2) * (E3) + array3_size(E1, E2, E3) , ...) | kzalloc( - E1 * E2 * E3 + array3_size(E1, E2, E3) , ...) ) // And then all remaining 2 factors products when they're not all constants, // keeping sizeof() as the second factor argument. @@ expression THING, E1, E2; type TYPE; constant C1, C2, C3; @@ ( kzalloc(sizeof(THING) * C2, ...) | kzalloc(sizeof(TYPE) * C2, ...) | kzalloc(C1 * C2 * C3, ...) | kzalloc(C1 * C2, ...) | - kzalloc + kcalloc ( - sizeof(TYPE) * (E2) + E2, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(TYPE) * E2 + E2, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * (E2) + E2, sizeof(THING) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * E2 + E2, sizeof(THING) , ...) | - kzalloc + kcalloc ( - (E1) * E2 + E1, E2 , ...) | - kzalloc + kcalloc ( - (E1) * (E2) + E1, E2 , ...) | - kzalloc + kcalloc ( - E1 * E2 + E1, E2 , ...) ) Signed-off-by: Kees Cook <keescook@chromium.org>
447 lines
8.6 KiB
C
447 lines
8.6 KiB
C
/*
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* linux/arch/arm/mach-omap1/mcbsp.c
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*
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* Copyright (C) 2008 Instituto Nokia de Tecnologia
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* Contact: Eduardo Valentin <eduardo.valentin@indt.org.br>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* Multichannel mode not supported.
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*/
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#include <linux/ioport.h>
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/clk.h>
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#include <linux/err.h>
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#include <linux/io.h>
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#include <linux/platform_device.h>
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#include <linux/slab.h>
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#include <linux/omap-dma.h>
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#include <mach/mux.h>
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#include "soc.h"
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#include <linux/platform_data/asoc-ti-mcbsp.h>
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#include <mach/irqs.h>
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#include "iomap.h"
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#define DPS_RSTCT2_PER_EN (1 << 0)
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#define DSP_RSTCT2_WD_PER_EN (1 << 1)
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static int dsp_use;
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static struct clk *api_clk;
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static struct clk *dsp_clk;
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static struct platform_device **omap_mcbsp_devices;
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static void omap1_mcbsp_request(unsigned int id)
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{
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/*
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* On 1510, 1610 and 1710, McBSP1 and McBSP3
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* are DSP public peripherals.
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*/
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if (id == 0 || id == 2) {
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if (dsp_use++ == 0) {
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api_clk = clk_get(NULL, "api_ck");
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dsp_clk = clk_get(NULL, "dsp_ck");
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if (!IS_ERR(api_clk) && !IS_ERR(dsp_clk)) {
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clk_enable(api_clk);
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clk_enable(dsp_clk);
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/*
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* DSP external peripheral reset
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* FIXME: This should be moved to dsp code
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*/
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__raw_writew(__raw_readw(DSP_RSTCT2) | DPS_RSTCT2_PER_EN |
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DSP_RSTCT2_WD_PER_EN, DSP_RSTCT2);
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}
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}
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}
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}
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static void omap1_mcbsp_free(unsigned int id)
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{
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if (id == 0 || id == 2) {
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if (--dsp_use == 0) {
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if (!IS_ERR(api_clk)) {
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clk_disable(api_clk);
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clk_put(api_clk);
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}
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if (!IS_ERR(dsp_clk)) {
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clk_disable(dsp_clk);
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clk_put(dsp_clk);
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}
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}
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}
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}
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static struct omap_mcbsp_ops omap1_mcbsp_ops = {
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.request = omap1_mcbsp_request,
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.free = omap1_mcbsp_free,
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};
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#define OMAP7XX_MCBSP1_BASE 0xfffb1000
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#define OMAP7XX_MCBSP2_BASE 0xfffb1800
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#define OMAP1510_MCBSP1_BASE 0xe1011800
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#define OMAP1510_MCBSP2_BASE 0xfffb1000
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#define OMAP1510_MCBSP3_BASE 0xe1017000
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#define OMAP1610_MCBSP1_BASE 0xe1011800
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#define OMAP1610_MCBSP2_BASE 0xfffb1000
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#define OMAP1610_MCBSP3_BASE 0xe1017000
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#if defined(CONFIG_ARCH_OMAP730) || defined(CONFIG_ARCH_OMAP850)
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struct resource omap7xx_mcbsp_res[][6] = {
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{
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{
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.start = OMAP7XX_MCBSP1_BASE,
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.end = OMAP7XX_MCBSP1_BASE + SZ_256,
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.flags = IORESOURCE_MEM,
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},
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{
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.name = "rx",
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.start = INT_7XX_McBSP1RX,
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.flags = IORESOURCE_IRQ,
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},
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{
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.name = "tx",
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.start = INT_7XX_McBSP1TX,
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.flags = IORESOURCE_IRQ,
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},
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{
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.name = "rx",
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.start = 9,
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.flags = IORESOURCE_DMA,
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},
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{
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.name = "tx",
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.start = 8,
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.flags = IORESOURCE_DMA,
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},
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},
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{
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{
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.start = OMAP7XX_MCBSP2_BASE,
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.end = OMAP7XX_MCBSP2_BASE + SZ_256,
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.flags = IORESOURCE_MEM,
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},
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{
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.name = "rx",
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.start = INT_7XX_McBSP2RX,
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.flags = IORESOURCE_IRQ,
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},
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{
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.name = "tx",
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.start = INT_7XX_McBSP2TX,
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.flags = IORESOURCE_IRQ,
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},
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{
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.name = "rx",
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.start = 11,
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.flags = IORESOURCE_DMA,
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},
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{
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.name = "tx",
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.start = 10,
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.flags = IORESOURCE_DMA,
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},
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},
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};
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#define omap7xx_mcbsp_res_0 omap7xx_mcbsp_res[0]
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static struct omap_mcbsp_platform_data omap7xx_mcbsp_pdata[] = {
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{
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.ops = &omap1_mcbsp_ops,
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},
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{
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.ops = &omap1_mcbsp_ops,
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},
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};
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#define OMAP7XX_MCBSP_RES_SZ ARRAY_SIZE(omap7xx_mcbsp_res[1])
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#define OMAP7XX_MCBSP_COUNT ARRAY_SIZE(omap7xx_mcbsp_res)
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#else
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#define omap7xx_mcbsp_res_0 NULL
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#define omap7xx_mcbsp_pdata NULL
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#define OMAP7XX_MCBSP_RES_SZ 0
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#define OMAP7XX_MCBSP_COUNT 0
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#endif
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#ifdef CONFIG_ARCH_OMAP15XX
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struct resource omap15xx_mcbsp_res[][6] = {
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{
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{
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.start = OMAP1510_MCBSP1_BASE,
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.end = OMAP1510_MCBSP1_BASE + SZ_256,
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.flags = IORESOURCE_MEM,
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},
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{
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.name = "rx",
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.start = INT_McBSP1RX,
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.flags = IORESOURCE_IRQ,
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},
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{
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.name = "tx",
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.start = INT_McBSP1TX,
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.flags = IORESOURCE_IRQ,
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},
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{
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.name = "rx",
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.start = 9,
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.flags = IORESOURCE_DMA,
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},
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{
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.name = "tx",
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.start = 8,
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.flags = IORESOURCE_DMA,
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},
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},
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{
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{
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.start = OMAP1510_MCBSP2_BASE,
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.end = OMAP1510_MCBSP2_BASE + SZ_256,
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.flags = IORESOURCE_MEM,
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},
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{
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.name = "rx",
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.start = INT_1510_SPI_RX,
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.flags = IORESOURCE_IRQ,
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},
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{
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.name = "tx",
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.start = INT_1510_SPI_TX,
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.flags = IORESOURCE_IRQ,
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},
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{
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.name = "rx",
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.start = 17,
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.flags = IORESOURCE_DMA,
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},
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{
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.name = "tx",
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.start = 16,
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.flags = IORESOURCE_DMA,
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},
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},
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{
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{
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.start = OMAP1510_MCBSP3_BASE,
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.end = OMAP1510_MCBSP3_BASE + SZ_256,
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.flags = IORESOURCE_MEM,
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},
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{
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.name = "rx",
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.start = INT_McBSP3RX,
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.flags = IORESOURCE_IRQ,
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},
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{
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.name = "tx",
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.start = INT_McBSP3TX,
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.flags = IORESOURCE_IRQ,
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},
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{
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.name = "rx",
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.start = 11,
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.flags = IORESOURCE_DMA,
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},
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{
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.name = "tx",
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.start = 10,
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.flags = IORESOURCE_DMA,
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},
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},
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};
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#define omap15xx_mcbsp_res_0 omap15xx_mcbsp_res[0]
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static struct omap_mcbsp_platform_data omap15xx_mcbsp_pdata[] = {
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{
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.ops = &omap1_mcbsp_ops,
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},
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{
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.ops = &omap1_mcbsp_ops,
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},
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{
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.ops = &omap1_mcbsp_ops,
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},
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};
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#define OMAP15XX_MCBSP_RES_SZ ARRAY_SIZE(omap15xx_mcbsp_res[1])
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#define OMAP15XX_MCBSP_COUNT ARRAY_SIZE(omap15xx_mcbsp_res)
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#else
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#define omap15xx_mcbsp_res_0 NULL
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#define omap15xx_mcbsp_pdata NULL
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#define OMAP15XX_MCBSP_RES_SZ 0
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#define OMAP15XX_MCBSP_COUNT 0
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#endif
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#ifdef CONFIG_ARCH_OMAP16XX
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struct resource omap16xx_mcbsp_res[][6] = {
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{
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{
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.start = OMAP1610_MCBSP1_BASE,
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.end = OMAP1610_MCBSP1_BASE + SZ_256,
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.flags = IORESOURCE_MEM,
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},
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{
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.name = "rx",
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.start = INT_McBSP1RX,
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.flags = IORESOURCE_IRQ,
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},
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{
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.name = "tx",
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.start = INT_McBSP1TX,
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.flags = IORESOURCE_IRQ,
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},
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{
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.name = "rx",
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.start = 9,
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.flags = IORESOURCE_DMA,
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},
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{
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.name = "tx",
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.start = 8,
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.flags = IORESOURCE_DMA,
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},
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},
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{
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{
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.start = OMAP1610_MCBSP2_BASE,
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.end = OMAP1610_MCBSP2_BASE + SZ_256,
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.flags = IORESOURCE_MEM,
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},
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{
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.name = "rx",
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.start = INT_1610_McBSP2_RX,
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.flags = IORESOURCE_IRQ,
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},
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{
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.name = "tx",
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.start = INT_1610_McBSP2_TX,
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.flags = IORESOURCE_IRQ,
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},
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{
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.name = "rx",
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.start = 17,
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.flags = IORESOURCE_DMA,
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},
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{
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.name = "tx",
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.start = 16,
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.flags = IORESOURCE_DMA,
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},
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},
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{
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{
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.start = OMAP1610_MCBSP3_BASE,
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.end = OMAP1610_MCBSP3_BASE + SZ_256,
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.flags = IORESOURCE_MEM,
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},
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{
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.name = "rx",
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.start = INT_McBSP3RX,
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.flags = IORESOURCE_IRQ,
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},
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{
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.name = "tx",
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.start = INT_McBSP3TX,
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.flags = IORESOURCE_IRQ,
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},
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{
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.name = "rx",
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.start = 11,
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.flags = IORESOURCE_DMA,
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},
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{
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.name = "tx",
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.start = 10,
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.flags = IORESOURCE_DMA,
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},
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},
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};
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#define omap16xx_mcbsp_res_0 omap16xx_mcbsp_res[0]
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static struct omap_mcbsp_platform_data omap16xx_mcbsp_pdata[] = {
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{
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.ops = &omap1_mcbsp_ops,
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},
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{
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.ops = &omap1_mcbsp_ops,
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},
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{
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.ops = &omap1_mcbsp_ops,
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},
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};
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#define OMAP16XX_MCBSP_RES_SZ ARRAY_SIZE(omap16xx_mcbsp_res[1])
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#define OMAP16XX_MCBSP_COUNT ARRAY_SIZE(omap16xx_mcbsp_res)
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#else
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#define omap16xx_mcbsp_res_0 NULL
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#define omap16xx_mcbsp_pdata NULL
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#define OMAP16XX_MCBSP_RES_SZ 0
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#define OMAP16XX_MCBSP_COUNT 0
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#endif
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static void omap_mcbsp_register_board_cfg(struct resource *res, int res_count,
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struct omap_mcbsp_platform_data *config, int size)
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{
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int i;
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omap_mcbsp_devices = kcalloc(size, sizeof(struct platform_device *),
|
|
GFP_KERNEL);
|
|
if (!omap_mcbsp_devices) {
|
|
printk(KERN_ERR "Could not register McBSP devices\n");
|
|
return;
|
|
}
|
|
|
|
for (i = 0; i < size; i++) {
|
|
struct platform_device *new_mcbsp;
|
|
int ret;
|
|
|
|
new_mcbsp = platform_device_alloc("omap-mcbsp", i + 1);
|
|
if (!new_mcbsp)
|
|
continue;
|
|
platform_device_add_resources(new_mcbsp, &res[i * res_count],
|
|
res_count);
|
|
config[i].reg_size = 2;
|
|
config[i].reg_step = 2;
|
|
new_mcbsp->dev.platform_data = &config[i];
|
|
ret = platform_device_add(new_mcbsp);
|
|
if (ret) {
|
|
platform_device_put(new_mcbsp);
|
|
continue;
|
|
}
|
|
omap_mcbsp_devices[i] = new_mcbsp;
|
|
}
|
|
}
|
|
|
|
static int __init omap1_mcbsp_init(void)
|
|
{
|
|
if (!cpu_class_is_omap1())
|
|
return -ENODEV;
|
|
|
|
if (cpu_is_omap7xx())
|
|
omap_mcbsp_register_board_cfg(omap7xx_mcbsp_res_0,
|
|
OMAP7XX_MCBSP_RES_SZ,
|
|
omap7xx_mcbsp_pdata,
|
|
OMAP7XX_MCBSP_COUNT);
|
|
|
|
if (cpu_is_omap15xx())
|
|
omap_mcbsp_register_board_cfg(omap15xx_mcbsp_res_0,
|
|
OMAP15XX_MCBSP_RES_SZ,
|
|
omap15xx_mcbsp_pdata,
|
|
OMAP15XX_MCBSP_COUNT);
|
|
|
|
if (cpu_is_omap16xx())
|
|
omap_mcbsp_register_board_cfg(omap16xx_mcbsp_res_0,
|
|
OMAP16XX_MCBSP_RES_SZ,
|
|
omap16xx_mcbsp_pdata,
|
|
OMAP16XX_MCBSP_COUNT);
|
|
|
|
return 0;
|
|
}
|
|
|
|
arch_initcall(omap1_mcbsp_init);
|