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imx233: fix comments

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Change-Id: I2e907feaec39e6ec1614ed19676b13a1d4f7f6b2
This commit is contained in:
Amaury Pouly 2014-04-24 14:12:25 +02:00
parent 25ecbc5432
commit c8461c5152
1 changed files with 8 additions and 8 deletions
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16
firmware/target/arm/imx233/sdmmc-imx233.c
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@ -554,7 +554,7 @@ static int init_mmc_drive(int drive)
} }
#endif #endif
// low-level function, don't call directly! /* low-level function, don't call directly! */
static int __xfer_sectors(int drive, unsigned long start, int count, void *buf, bool read) static int __xfer_sectors(int drive, unsigned long start, int count, void *buf, bool read)
{ {
uint32_t resp; uint32_t resp;
@ -596,7 +596,7 @@ static int __xfer_sectors(int drive, unsigned long start, int count, void *buf,
static int transfer_sectors(int drive, unsigned long start, int count, void *buf, bool read) static int transfer_sectors(int drive, unsigned long start, int count, void *buf, bool read)
{ {
int ret = 0; int ret = 0;
// the function doesn't work when count is 0 /* the function doesn't work when count is 0 */
if(count == 0) if(count == 0)
return ret; return ret;
@ -663,12 +663,12 @@ static int transfer_sectors(int drive, unsigned long start, int count, void *buf
void *ptr = CACHEALIGN_UP(buf); void *ptr = CACHEALIGN_UP(buf);
if(buf != ptr) if(buf != ptr)
{ {
// copy count-1 sector and then move within the buffer /* copy count-1 sector and then move within the buffer */
ret = __xfer_sectors(drive, start, count - 1, ptr, read); ret = __xfer_sectors(drive, start, count - 1, ptr, read);
memmove(buf, ptr, 512 * (count - 1)); memmove(buf, ptr, 512 * (count - 1));
if(ret >= 0) if(ret >= 0)
{ {
// transfer the last sector the aligned_buffer and copy /* transfer the last sector the aligned_buffer and copy */
ret = __xfer_sectors(drive, start + count - 1, 1, ret = __xfer_sectors(drive, start + count - 1, 1,
aligned_buffer[drive], read); aligned_buffer[drive], read);
memcpy(buf + 512 * (count - 1), aligned_buffer[drive], 512); memcpy(buf + 512 * (count - 1), aligned_buffer[drive], 512);
@ -682,15 +682,15 @@ static int transfer_sectors(int drive, unsigned long start, int count, void *buf
void *ptr = CACHEALIGN_UP(buf); void *ptr = CACHEALIGN_UP(buf);
if(buf != ptr) if(buf != ptr)
{ {
// transfer the first sector to aligned_buffer and copy /* transfer the first sector to aligned_buffer and copy */
memcpy(aligned_buffer[drive], buf, 512); memcpy(aligned_buffer[drive], buf, 512);
ret = __xfer_sectors(drive, start, 1, aligned_buffer[drive], read); ret = __xfer_sectors(drive, start, 1, aligned_buffer[drive], read);
if(ret >= 0) if(ret >= 0)
{ {
// move within the buffer and transfer /* move within the buffer and transfer */
memmove(ptr, buf + 512, 512 * (count - 1)); memmove(ptr, buf + 512, 512 * (count - 1));
ret = __xfer_sectors(drive, start + 1, count - 1, ptr, read); ret = __xfer_sectors(drive, start + 1, count - 1, ptr, read);
// move back /* move back */
memmove(buf + 512, ptr, 512 * (count - 1)); memmove(buf + 512, ptr, 512 * (count - 1));
memcpy(buf, aligned_buffer[drive], 512); memcpy(buf, aligned_buffer[drive], 512);
} }
@ -712,7 +712,7 @@ static int transfer_sectors(int drive, unsigned long start, int count, void *buf
return ret; return ret;
} }
// user specificies the sdmmc drive /* user specifies the sdmmc drive */
static int part_read_fn(intptr_t user, unsigned long start, int count, void* buf) static int part_read_fn(intptr_t user, unsigned long start, int count, void* buf)
{ {
return transfer_sectors(user, start, count, buf, true); return transfer_sectors(user, start, count, buf, true);