* [U-Boot] [U-BOOT][PATCH 3/3] mflash : Improve mg_disk_read(write) sector count calculation
@ 2009-02-17 7:10 unsik Kim
0 siblings, 0 replies; only message in thread
From: unsik Kim @ 2009-02-17 7:10 UTC (permalink / raw)
To: u-boot
Signed-off-by: unsik Kim <donari75@gmail.com>
---
drivers/block/mg_disk.c | 16 ++++------------
1 files changed, 4 insertions(+), 12 deletions(-)
diff --git a/drivers/block/mg_disk.c b/drivers/block/mg_disk.c
index 2eb461d..bbfeeda 100644
--- a/drivers/block/mg_disk.c
+++ b/drivers/block/mg_disk.c
@@ -382,12 +382,8 @@ unsigned int mg_disk_read (u32 addr, u8 *buff, u32 len)
if (cur_addr < end_addr) {
sect_num = cur_addr >> MG_SECTOR_SIZE_SHIFT;
- next_sec_addr = cur_addr + MG_SECTOR_SIZE;
-
- while (next_sec_addr <= end_addr) {
- cnt++;
- next_sec_addr += MG_SECTOR_SIZE;
- }
+ cnt = ((end_addr & MG_SECTOR_SIZE_MASK) - cur_addr) >>
+ MG_SECTOR_SIZE_SHIFT;
if (cnt)
err = mg_disk_read_sects(buff_ptr, sect_num, cnt);
@@ -524,12 +520,8 @@ unsigned int mg_disk_write(u32 addr, u8 *buff, u32 len)
if (cur_addr < end_addr) {
sect_num = cur_addr >> MG_SECTOR_SIZE_SHIFT;
- next_sec_addr = cur_addr + MG_SECTOR_SIZE;
-
- while (next_sec_addr <= end_addr) {
- cnt++;
- next_sec_addr += MG_SECTOR_SIZE;
- }
+ cnt = ((end_addr & MG_SECTOR_SIZE_MASK) - cur_addr) >>
+ MG_SECTOR_SIZE_SHIFT;
if (cnt)
err = mg_disk_write_sects(buff_ptr, sect_num, cnt);
--
1.5.6.6
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2009-02-17 7:10 [U-Boot] [U-BOOT][PATCH 3/3] mflash : Improve mg_disk_read(write) sector count calculation unsik Kim
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