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staging: xgifb: vb_init: use readl()/writel() to access iomapped memory

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Use readl() and writel() in FB memory test instead of direct pointer
access, and also add iomem annotations for the FB memory.

The patch eliminates the following sparse warnings:

drivers/staging/xgifb/XGI_main_26.c:2113:69: warning: incorrect type in assignment (different address spaces)
drivers/staging/xgifb/XGI_main_26.c:2113:69:    expected unsigned char *static [addressable] [toplevel] [assigned] pjVideoMemoryAddress
drivers/staging/xgifb/XGI_main_26.c:2113:69:    got void [noderef] <asn:2>*
drivers/staging/xgifb/XGI_main_26.c:2399:30: warning: incorrect type in assignment (different address spaces)
drivers/staging/xgifb/XGI_main_26.c:2399:30:    expected char [noderef] <asn:2>*screen_base
drivers/staging/xgifb/XGI_main_26.c:2399:30:    got char *[addressable] [toplevel] [assigned] video_vbase
drivers/staging/xgifb/XGI_main_26.c:2430:31: warning: incorrect type in argument 1 (different address spaces)
drivers/staging/xgifb/XGI_main_26.c:2430:31:    expected void volatile [noderef] <asn:2>*addr
drivers/staging/xgifb/XGI_main_26.c:2430:31:    got char *[addressable] [toplevel] [assigned] video_vbase
drivers/staging/xgifb/XGI_main_26.c:2454:31: warning: incorrect type in argument 1 (different address spaces)
drivers/staging/xgifb/XGI_main_26.c:2454:31:    expected void volatile [noderef] <asn:2>*addr
drivers/staging/xgifb/XGI_main_26.c:2454:31:    got char *[addressable] [toplev

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Aaro Koskinen 2011-09-13 22:49:33 +03:00 committed by Greg Kroah-Hartman
parent 4b4954621f
commit c44fa627c7
4 changed files with 8 additions and 8 deletions
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2
drivers/staging/xgifb/XGIfb.h
View file

@ -56,7 +56,7 @@ struct video_info {
int chip_id;
unsigned int video_size;
unsigned long video_base;
char *video_vbase;
void __iomem *video_vbase;
unsigned long mmio_base;
unsigned long mmio_size;
void __iomem *mmio_vbase;

10
drivers/staging/xgifb/vb_init.c
View file

@ -678,12 +678,13 @@ static int XGINew_ReadWriteRest(unsigned short StopAddr,
{
int i;
unsigned long Position = 0;
void __iomem *fbaddr = pVBInfo->FBAddr;
*((unsigned long *) (pVBInfo->FBAddr + Position)) = Position;
writel(Position, fbaddr + Position);
for (i = StartAddr; i <= StopAddr; i++) {
Position = 1 << i;
*((unsigned long *) (pVBInfo->FBAddr + Position)) = Position;
writel(Position, fbaddr + Position);
}
udelay(500); /* [Vicent] 2004/04/16.
@ -691,13 +692,12 @@ static int XGINew_ReadWriteRest(unsigned short StopAddr,
Position = 0;
if ((*(unsigned long *) (pVBInfo->FBAddr + Position)) != Position)
if (readl(fbaddr + Position) != Position)
return 0;
for (i = StartAddr; i <= StopAddr; i++) {
Position = 1 << i;
if ((*(unsigned long *) (pVBInfo->FBAddr + Position)) !=
Position)
if (readl(fbaddr + Position) != Position)
return 0;
}
return 1;

2
drivers/staging/xgifb/vb_struct.h
View file

@ -300,7 +300,7 @@ struct vb_device_info {
unsigned short SelectCRT2Rate;
unsigned char *ROMAddr;
unsigned char *FBAddr;
void __iomem *FBAddr;
unsigned long BaseAddr;
unsigned long RelIO;

2
drivers/staging/xgifb/vgatypes.h
View file

@ -53,7 +53,7 @@ struct xgi_hw_device_info {
unsigned char *pjVirtualRomBase; /* ROM image */
unsigned char *pjVideoMemoryAddress;/* base virtual memory address */
void __iomem *pjVideoMemoryAddress;/* base virtual memory address */
/* of Linear VGA memory */
unsigned long ulVideoMemorySize; /* size, in bytes, of the