From cc0fc0bbeb17dd33ed7bfea58d0178e9c007ff67 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Wed, 1 Sep 2010 08:55:22 -0600 Subject: [PATCH 01/15] spi/spi_s3c64xx: Make probe more robust against missing board config The S3C64xx SPI driver requires the machine to call s3c64xx_spi_set_info() to select a few options, including the clock to use for the SPI controller. If this is not done then a NULL will be passed as the clock name for clk_get(), causing an obscure crash. Guard against this and other missing configuration by validating that the clock name has been filled in in the platform data that ets passed in. Signed-off-by: Mark Brown Signed-off-by: Grant Likely --- drivers/spi/spi_s3c64xx.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/drivers/spi/spi_s3c64xx.c b/drivers/spi/spi_s3c64xx.c index 97365815a729..a0b63b785418 100644 --- a/drivers/spi/spi_s3c64xx.c +++ b/drivers/spi/spi_s3c64xx.c @@ -919,6 +919,13 @@ static int __init s3c64xx_spi_probe(struct platform_device *pdev) return -ENODEV; } + sci = pdev->dev.platform_data; + if (!sci->src_clk_name) { + dev_err(&pdev->dev, + "Board init must call s3c64xx_spi_set_info()\n"); + return -EINVAL; + } + /* Check for availability of necessary resource */ dmatx_res = platform_get_resource(pdev, IORESOURCE_DMA, 0); @@ -946,8 +953,6 @@ static int __init s3c64xx_spi_probe(struct platform_device *pdev) return -ENOMEM; } - sci = pdev->dev.platform_data; - platform_set_drvdata(pdev, master); sdd = spi_master_get_devdata(master); From 8944f4f3d9695e04f7091ab61da9aab7a4be5846 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Wed, 1 Sep 2010 08:55:23 -0600 Subject: [PATCH 02/15] spi/spi_s3c64xx: Staticise non-exported functions Signed-off-by: Mark Brown Acked-by: Jassi Brar Signed-off-by: Grant Likely --- drivers/spi/spi_s3c64xx.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/spi/spi_s3c64xx.c b/drivers/spi/spi_s3c64xx.c index a0b63b785418..7e627f73bc6c 100644 --- a/drivers/spi/spi_s3c64xx.c +++ b/drivers/spi/spi_s3c64xx.c @@ -447,8 +447,8 @@ static void s3c64xx_spi_config(struct s3c64xx_spi_driver_data *sdd) writel(val, regs + S3C64XX_SPI_CLK_CFG); } -void s3c64xx_spi_dma_rxcb(struct s3c2410_dma_chan *chan, void *buf_id, - int size, enum s3c2410_dma_buffresult res) +static void s3c64xx_spi_dma_rxcb(struct s3c2410_dma_chan *chan, void *buf_id, + int size, enum s3c2410_dma_buffresult res) { struct s3c64xx_spi_driver_data *sdd = buf_id; unsigned long flags; @@ -467,8 +467,8 @@ void s3c64xx_spi_dma_rxcb(struct s3c2410_dma_chan *chan, void *buf_id, spin_unlock_irqrestore(&sdd->lock, flags); } -void s3c64xx_spi_dma_txcb(struct s3c2410_dma_chan *chan, void *buf_id, - int size, enum s3c2410_dma_buffresult res) +static void s3c64xx_spi_dma_txcb(struct s3c2410_dma_chan *chan, void *buf_id, + int size, enum s3c2410_dma_buffresult res) { struct s3c64xx_spi_driver_data *sdd = buf_id; unsigned long flags; From 9f1a1fca35066117353994bff80a5115cddad7a2 Mon Sep 17 00:00:00 2001 From: Michal Simek Date: Wed, 1 Sep 2010 08:55:23 -0600 Subject: [PATCH 03/15] of: Fix missing includes - ll_temac It is the next patch which is fixing missing header which were removed from prom.h. Related patches: "of/address: Clean up function declarations" (sha1 id 22ae782f8) "of: Fix missing includes" (sha1 id f1ca09b2b) Signed-off-by: Michal Simek Signed-off-by: Grant Likely --- drivers/net/ll_temac_main.c | 1 + drivers/net/ll_temac_mdio.c | 1 + 2 files changed, 2 insertions(+) diff --git a/drivers/net/ll_temac_main.c b/drivers/net/ll_temac_main.c index bdf2149e5296..87f0a93b165c 100644 --- a/drivers/net/ll_temac_main.c +++ b/drivers/net/ll_temac_main.c @@ -38,6 +38,7 @@ #include #include #include +#include #include #include #include /* needed for sizeof(tcphdr) */ diff --git a/drivers/net/ll_temac_mdio.c b/drivers/net/ll_temac_mdio.c index 5ae28c975b38..8cf9d4f56bb2 100644 --- a/drivers/net/ll_temac_mdio.c +++ b/drivers/net/ll_temac_mdio.c @@ -10,6 +10,7 @@ #include #include #include +#include #include #include From 4e4438b86527e8bf1f49503a30d487e401e64f9c Mon Sep 17 00:00:00 2001 From: Anton Vorontsov Date: Wed, 1 Sep 2010 08:55:24 -0600 Subject: [PATCH 04/15] gpiolib: Add 'struct gpio_chip' forward declaration for !GPIOLIB case With CONFIG_GPIOLIB=n, the 'struct gpio_chip' is not declared, so the following pops up on PowerPC: cc1: warnings being treated as errors In file included from arch/powerpc/platforms/52xx/mpc52xx_common.c:19: include/linux/of_gpio.h:74: warning: 'struct gpio_chip' declared inside parameter list include/linux/of_gpio.h:74: warning: its scope is only this definition or declaration, which is probably not what you want include/linux/of_gpio.h:75: warning: 'struct gpio_chip' declared inside parameter list make[2]: *** [arch/powerpc/platforms/52xx/mpc52xx_common.o] Error 1 This patch fixes the issue by providing the proper forward declaration. Signed-off-by: Anton Vorontsov Signed-off-by: Grant Likely --- include/linux/gpio.h | 1 + 1 file changed, 1 insertion(+) diff --git a/include/linux/gpio.h b/include/linux/gpio.h index 03f616b78cfa..e41f7dd1ae67 100644 --- a/include/linux/gpio.h +++ b/include/linux/gpio.h @@ -13,6 +13,7 @@ #include struct device; +struct gpio_chip; /* * Some platforms don't support the GPIO programming interface. From 34860089c9e8abcc77428d29743b37ff756197e7 Mon Sep 17 00:00:00 2001 From: David Lamparter Date: Mon, 30 Aug 2010 23:54:17 +0200 Subject: [PATCH 05/15] spi: free children in spi_unregister_master, not siblings introduced by 49dce689 ("spi doesn't need class_device") and bad-fixed by 350d0076 ("spi: fix double-free on spi_unregister_master"), spi_unregister_master would previously device_unregister all of the spi master's siblings (instead of its children). hilarity ensues. fix it to unregister children. Signed-off-by: David Lamparter Signed-off-by: Grant Likely --- drivers/spi/spi.c | 9 +++------ 1 file changed, 3 insertions(+), 6 deletions(-) diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c index a9e5c79ae52a..0bcf4c1601a2 100644 --- a/drivers/spi/spi.c +++ b/drivers/spi/spi.c @@ -554,11 +554,9 @@ done: EXPORT_SYMBOL_GPL(spi_register_master); -static int __unregister(struct device *dev, void *master_dev) +static int __unregister(struct device *dev, void *null) { - /* note: before about 2.6.14-rc1 this would corrupt memory: */ - if (dev != master_dev) - spi_unregister_device(to_spi_device(dev)); + spi_unregister_device(to_spi_device(dev)); return 0; } @@ -576,8 +574,7 @@ void spi_unregister_master(struct spi_master *master) { int dummy; - dummy = device_for_each_child(master->dev.parent, &master->dev, - __unregister); + dummy = device_for_each_child(&master->dev, NULL, __unregister); device_unregister(&master->dev); } EXPORT_SYMBOL_GPL(spi_unregister_master); From d2a787fc57142ba8757142f1569603b4d0b714a4 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Tue, 7 Sep 2010 11:29:17 +0100 Subject: [PATCH 06/15] spi/spi_s3c64xx: Move to subsys_initcall() Allow the use of the S3C64xx SPI controller with things like PMICs by moving the init up to subsys_initcall(). Signed-off-by: Mark Brown Acked-by: Jassi Brar Signed-off-by: Grant Likely --- drivers/spi/spi_s3c64xx.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/spi/spi_s3c64xx.c b/drivers/spi/spi_s3c64xx.c index 7e627f73bc6c..a4c480551e5f 100644 --- a/drivers/spi/spi_s3c64xx.c +++ b/drivers/spi/spi_s3c64xx.c @@ -1175,7 +1175,7 @@ static int __init s3c64xx_spi_init(void) { return platform_driver_probe(&s3c64xx_spi_driver, s3c64xx_spi_probe); } -module_init(s3c64xx_spi_init); +subsys_initcall(s3c64xx_spi_init); static void __exit s3c64xx_spi_exit(void) { From 9d8f86b56093d7b06d81d4063d5b9a4cbf887e75 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Tue, 7 Sep 2010 16:37:52 +0100 Subject: [PATCH 07/15] spi/spi_s3c64xx: Increase dead reckoning time in wait_for_xfer() For small transfers at high speeds the expected transfer time can easily be well under 1ms, causing the delay in wait_for_xfer() to be only the dead reckoning fudge factor of 5ms currently included. Experiments on some of my systems shows that this is marginal for some transfers so double it to 10ms. Signed-off-by: Mark Brown Acked-by: Jassi Brar Signed-off-by: Grant Likely --- drivers/spi/spi_s3c64xx.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/spi/spi_s3c64xx.c b/drivers/spi/spi_s3c64xx.c index a4c480551e5f..8130f02dc466 100644 --- a/drivers/spi/spi_s3c64xx.c +++ b/drivers/spi/spi_s3c64xx.c @@ -320,7 +320,7 @@ static int wait_for_xfer(struct s3c64xx_spi_driver_data *sdd, /* millisecs to xfer 'len' bytes @ 'cur_speed' */ ms = xfer->len * 8 * 1000 / sdd->cur_speed; - ms += 5; /* some tolerance */ + ms += 10; /* some tolerance */ if (dma_mode) { val = msecs_to_jiffies(ms) + 10; From cbcc062abb16d39839b3d8d4e3d20360fc21eb58 Mon Sep 17 00:00:00 2001 From: Yong Wang Date: Tue, 7 Sep 2010 15:27:27 +0800 Subject: [PATCH 08/15] spi/dw_spi: Allow interrupt sharing Allow interrupt sharing since exclusive interrupt line for DW SPI controller is not provided on every platform. Signed-off-by: Yong Wang Signed-off-by: Grant Likely --- drivers/spi/dw_spi.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/spi/dw_spi.c b/drivers/spi/dw_spi.c index d256cb00604c..11fbbf6fb07b 100644 --- a/drivers/spi/dw_spi.c +++ b/drivers/spi/dw_spi.c @@ -396,6 +396,11 @@ static irqreturn_t interrupt_transfer(struct dw_spi *dws) static irqreturn_t dw_spi_irq(int irq, void *dev_id) { struct dw_spi *dws = dev_id; + u16 irq_status, irq_mask = 0x3f; + + irq_status = dw_readw(dws, isr) & irq_mask; + if (!irq_status) + return IRQ_NONE; if (!dws->cur_msg) { spi_mask_intr(dws, SPI_INT_TXEI); @@ -883,7 +888,7 @@ int __devinit dw_spi_add_host(struct dw_spi *dws) dws->dma_inited = 0; dws->dma_addr = (dma_addr_t)(dws->paddr + 0x60); - ret = request_irq(dws->irq, dw_spi_irq, 0, + ret = request_irq(dws->irq, dw_spi_irq, IRQF_SHARED, "dw_spi", dws); if (ret < 0) { dev_err(&master->dev, "can not get IRQ\n"); From e3e55ff5854655d8723ad8b307f02515aecc3df5 Mon Sep 17 00:00:00 2001 From: Feng Tang Date: Tue, 7 Sep 2010 15:52:06 +0800 Subject: [PATCH 09/15] spi/dw_spi: clean the cs_control code commit 052dc7c45i "spi/dw_spi: conditional transfer mode change" introduced cs_control code, which has a bug by using bit offset for spi mode to set transfer mode in control register. Also it forces devices who don't need cs_control to re-configure the control registers for each spi transfer. This patch will fix them Signed-off-by: Feng Tang Signed-off-by: Grant Likely --- drivers/spi/dw_spi.c | 17 +++++------------ include/linux/spi/dw_spi.h | 2 ++ 2 files changed, 7 insertions(+), 12 deletions(-) diff --git a/drivers/spi/dw_spi.c b/drivers/spi/dw_spi.c index 11fbbf6fb07b..56247853c298 100644 --- a/drivers/spi/dw_spi.c +++ b/drivers/spi/dw_spi.c @@ -181,10 +181,6 @@ static void flush(struct dw_spi *dws) wait_till_not_busy(dws); } -static void null_cs_control(u32 command) -{ -} - static int null_writer(struct dw_spi *dws) { u8 n_bytes = dws->n_bytes; @@ -322,7 +318,7 @@ static void giveback(struct dw_spi *dws) struct spi_transfer, transfer_list); - if (!last_transfer->cs_change) + if (!last_transfer->cs_change && dws->cs_control) dws->cs_control(MRST_SPI_DEASSERT); msg->state = NULL; @@ -549,13 +545,13 @@ static void pump_transfers(unsigned long data) */ if (dws->cs_control) { if (dws->rx && dws->tx) - chip->tmode = 0x00; + chip->tmode = SPI_TMOD_TR; else if (dws->rx) - chip->tmode = 0x02; + chip->tmode = SPI_TMOD_RO; else - chip->tmode = 0x01; + chip->tmode = SPI_TMOD_TO; - cr0 &= ~(0x3 << SPI_MODE_OFFSET); + cr0 &= ~SPI_TMOD_MASK; cr0 |= (chip->tmode << SPI_TMOD_OFFSET); } @@ -704,9 +700,6 @@ static int dw_spi_setup(struct spi_device *spi) chip = kzalloc(sizeof(struct chip_data), GFP_KERNEL); if (!chip) return -ENOMEM; - - chip->cs_control = null_cs_control; - chip->enable_dma = 0; } /* diff --git a/include/linux/spi/dw_spi.h b/include/linux/spi/dw_spi.h index cc813f95a2f2..c91302f3a257 100644 --- a/include/linux/spi/dw_spi.h +++ b/include/linux/spi/dw_spi.h @@ -14,7 +14,9 @@ #define SPI_MODE_OFFSET 6 #define SPI_SCPH_OFFSET 6 #define SPI_SCOL_OFFSET 7 + #define SPI_TMOD_OFFSET 8 +#define SPI_TMOD_MASK (0x3 << SPI_TMOD_OFFSET) #define SPI_TMOD_TR 0x0 /* xmit & recv */ #define SPI_TMOD_TO 0x1 /* xmit only */ #define SPI_TMOD_RO 0x2 /* recv only */ From 251ee478f2c877a9a80362e094c542fbac7f5651 Mon Sep 17 00:00:00 2001 From: Jassi Brar Date: Fri, 3 Sep 2010 10:36:26 +0900 Subject: [PATCH 10/15] spi/s3c64xx: Fix compilation warning Fix compilation warning by typecasting the tx_buf pointer. [I'm not thrilled with resorting to a cast; but I cannot see a better way to go about this. I don't want to drop the const from struct spi_transfer ~~glikely] Signed-off-by: Jassi Brar Signed-off-by: Grant Likely --- drivers/spi/spi_s3c64xx.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/spi/spi_s3c64xx.c b/drivers/spi/spi_s3c64xx.c index 8130f02dc466..240b690a8a6f 100644 --- a/drivers/spi/spi_s3c64xx.c +++ b/drivers/spi/spi_s3c64xx.c @@ -508,8 +508,9 @@ static int s3c64xx_spi_map_mssg(struct s3c64xx_spi_driver_data *sdd, list_for_each_entry(xfer, &msg->transfers, transfer_list) { if (xfer->tx_buf != NULL) { - xfer->tx_dma = dma_map_single(dev, xfer->tx_buf, - xfer->len, DMA_TO_DEVICE); + xfer->tx_dma = dma_map_single(dev, + (void *)xfer->tx_buf, xfer->len, + DMA_TO_DEVICE); if (dma_mapping_error(dev, xfer->tx_dma)) { dev_err(dev, "dma_map_single Tx failed\n"); xfer->tx_dma = XFER_DMAADDR_INVALID; From c3f139b65585a5f29df47b2302ff8dbd9bdad0b0 Mon Sep 17 00:00:00 2001 From: Jassi Brar Date: Fri, 3 Sep 2010 10:36:46 +0900 Subject: [PATCH 11/15] spi/s3c64xx: Fix incorrect reuse of 'val' local variable. Instead of, wrongly, reusing the 'val' variable, use a dedicated one for reading the status register. Signed-off-by: Jassi Brar Signed-off-by: Grant Likely --- drivers/spi/spi_s3c64xx.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/spi/spi_s3c64xx.c b/drivers/spi/spi_s3c64xx.c index 240b690a8a6f..ef9dacabe062 100644 --- a/drivers/spi/spi_s3c64xx.c +++ b/drivers/spi/spi_s3c64xx.c @@ -326,10 +326,11 @@ static int wait_for_xfer(struct s3c64xx_spi_driver_data *sdd, val = msecs_to_jiffies(ms) + 10; val = wait_for_completion_timeout(&sdd->xfer_completion, val); } else { + u32 status; val = msecs_to_loops(ms); do { - val = readl(regs + S3C64XX_SPI_STATUS); - } while (RX_FIFO_LVL(val, sci) < xfer->len && --val); + status = readl(regs + S3C64XX_SPI_STATUS); + } while (RX_FIFO_LVL(status, sci) < xfer->len && --val); } if (!val) From be7852a839b6dcd86db1a2d25b9a1a99f38db2db Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Mon, 23 Aug 2010 17:40:56 +0100 Subject: [PATCH 12/15] spi/spi_s3c64xx: Warn if PIO transfers time out When using PIO we have a timeout for the TX and RX FIFOs to ensure that the data actually gets transferred. Warn if we hit that timeout - it should never happen, but this makes sure we'll find out if it does. Signed-off-by: Mark Brown Acked-by: Jassi Brar Signed-off-by: Grant Likely --- drivers/spi/spi_s3c64xx.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/spi/spi_s3c64xx.c b/drivers/spi/spi_s3c64xx.c index ef9dacabe062..c3038da2648a 100644 --- a/drivers/spi/spi_s3c64xx.c +++ b/drivers/spi/spi_s3c64xx.c @@ -200,6 +200,9 @@ static void flush_fifo(struct s3c64xx_spi_driver_data *sdd) val = readl(regs + S3C64XX_SPI_STATUS); } while (TX_FIFO_LVL(val, sci) && loops--); + if (loops == 0) + dev_warn(&sdd->pdev->dev, "Timed out flushing TX FIFO\n"); + /* Flush RxFIFO*/ loops = msecs_to_loops(1); do { @@ -210,6 +213,9 @@ static void flush_fifo(struct s3c64xx_spi_driver_data *sdd) break; } while (loops--); + if (loops == 0) + dev_warn(&sdd->pdev->dev, "Timed out flushing RX FIFO\n"); + val = readl(regs + S3C64XX_SPI_CH_CFG); val &= ~S3C64XX_SPI_CH_SW_RST; writel(val, regs + S3C64XX_SPI_CH_CFG); From 545074fb953e1753f6b8409db533ad7998789efb Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Sat, 21 Aug 2010 11:07:36 +0200 Subject: [PATCH 13/15] spi/pl022: fix APB pclk power regression on U300 With the introduction of an AMBA PrimeCell per-cell block clock, the pclk was left on after probe() unless explicitly disabled. This clock is wired to the same clock on PL022 causing it to stay always on since. Fix this up properly by clocking the pclk whenever we want to write into any PL022 registers and clocking the external clock whenever we want to transmit messages on the bus. Signed-off-by: Linus Walleij Tested-by : Kevin Wells Signed-off-by: Grant Likely --- drivers/spi/amba-pl022.c | 14 ++++++++------ 1 file changed, 8 insertions(+), 6 deletions(-) diff --git a/drivers/spi/amba-pl022.c b/drivers/spi/amba-pl022.c index acd35d1ebd12..80613abe961d 100644 --- a/drivers/spi/amba-pl022.c +++ b/drivers/spi/amba-pl022.c @@ -503,8 +503,9 @@ static void giveback(struct pl022 *pl022) msg->state = NULL; if (msg->complete) msg->complete(msg->context); - /* This message is completed, so let's turn off the clock! */ + /* This message is completed, so let's turn off the clocks! */ clk_disable(pl022->clk); + amba_pclk_disable(pl022->adev); } /** @@ -1139,9 +1140,10 @@ static void pump_messages(struct work_struct *work) /* Setup the SPI using the per chip configuration */ pl022->cur_chip = spi_get_ctldata(pl022->cur_msg->spi); /* - * We enable the clock here, then the clock will be disabled when + * We enable the clocks here, then the clocks will be disabled when * giveback() is called in each method (poll/interrupt/DMA) */ + amba_pclk_enable(pl022->adev); clk_enable(pl022->clk); restore_state(pl022); flush(pl022); @@ -1786,11 +1788,9 @@ pl022_probe(struct amba_device *adev, struct amba_id *id) } /* Disable SSP */ - clk_enable(pl022->clk); writew((readw(SSP_CR1(pl022->virtbase)) & (~SSP_CR1_MASK_SSE)), SSP_CR1(pl022->virtbase)); load_ssp_default_config(pl022); - clk_disable(pl022->clk); status = request_irq(adev->irq[0], pl022_interrupt_handler, 0, "pl022", pl022); @@ -1818,6 +1818,8 @@ pl022_probe(struct amba_device *adev, struct amba_id *id) goto err_spi_register; } dev_dbg(dev, "probe succeded\n"); + /* Disable the silicon block pclk and clock it when needed */ + amba_pclk_disable(adev); return 0; err_spi_register: @@ -1879,9 +1881,9 @@ static int pl022_suspend(struct amba_device *adev, pm_message_t state) return status; } - clk_enable(pl022->clk); + amba_pclk_enable(adev); load_ssp_default_config(pl022); - clk_disable(pl022->clk); + amba_pclk_disable(adev); dev_dbg(&adev->dev, "suspended\n"); return 0; } From 05f25abcf6043952fb2a2d98735dec58ba1fcadb Mon Sep 17 00:00:00 2001 From: Julia Lawall Date: Sun, 29 Aug 2010 11:52:41 +0200 Subject: [PATCH 14/15] powerpc/5200: mpc52xx_uart.c: Add of_node_put to avoid memory leak Add a call to of_node_put in the error handling code following a call to of_find_compatible_node. The semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // @r exists@ local idexpression x; expression E,E1; statement S; @@ *x = (of_find_node_by_path |of_find_node_by_name |of_find_node_by_phandle |of_get_parent |of_get_next_parent |of_get_next_child |of_find_compatible_node |of_match_node )(...); ... if (x == NULL) S <... when != x = E *if (...) { ... when != of_node_put(x) when != if (...) { ... of_node_put(x); ... } ( return <+...x...+>; | * return ...; ) } ...> of_node_put(x); // Signed-off-by: Julia Lawall Acked-by: Wolfram Sang Signed-off-by: Grant Likely --- drivers/serial/mpc52xx_uart.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/serial/mpc52xx_uart.c b/drivers/serial/mpc52xx_uart.c index 8dedb266f143..c4399e23565a 100644 --- a/drivers/serial/mpc52xx_uart.c +++ b/drivers/serial/mpc52xx_uart.c @@ -500,6 +500,7 @@ static int __init mpc512x_psc_fifoc_init(void) psc_fifoc = of_iomap(np, 0); if (!psc_fifoc) { pr_err("%s: Can't map FIFOC\n", __func__); + of_node_put(np); return -ENODEV; } From 25c8e03bdb769dfe2381f8b7942f05b0eb4bdf31 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Mon, 6 Sep 2010 11:02:12 +0200 Subject: [PATCH 15/15] spi/pl022: move probe call to subsys_initcall() The PL022 SPI bus is sometimes used for early stuff like regulators that need to be present at module_init() time, so we move this to a subsys_initcall(). Signed-off-by: Linus Walleij Signed-off-by: Grant Likely --- drivers/spi/amba-pl022.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/spi/amba-pl022.c b/drivers/spi/amba-pl022.c index 80613abe961d..4c37c4e28647 100644 --- a/drivers/spi/amba-pl022.c +++ b/drivers/spi/amba-pl022.c @@ -1983,7 +1983,7 @@ static int __init pl022_init(void) return amba_driver_register(&pl022_driver); } -module_init(pl022_init); +subsys_initcall(pl022_init); static void __exit pl022_exit(void) {