diff options
| author | Steven J. Hill <sjhill@mips.com> | 2013-06-20 10:30:37 -0500 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-07-10 12:09:10 -0700 |
| commit | 1581208b2f0643eebfa7a3fbe5bad831c0bb7f0e (patch) | |
| tree | a8c4e201e65c58587fca8776c5c0258edae08215 /drivers | |
| parent | 99bfdd878693f440e723a7b33ccedd0b9dc1ca16 (diff) | |
| download | linux-1581208b2f0643eebfa7a3fbe5bad831c0bb7f0e.tar.bz2 | |
ide: Fix IDE PIO size calculation
IDE PIO calculates the size wrong when passing the parameter
"ide-core.nodma=0.0" to the kernel.
Signed-off-by: Leonid Yegoshin <Leonid.Yegoshin@imgtec.com>
Acked-by: Steven J. Hill <Steven.Hill@imgtec.com>
Signed-off-by: Steven J. Hill <sjhill@mips.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/ide/ide-taskfile.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/drivers/ide/ide-taskfile.c b/drivers/ide/ide-taskfile.c index 729428edeba2..dabb88b1cbec 100644 --- a/drivers/ide/ide-taskfile.c +++ b/drivers/ide/ide-taskfile.c @@ -239,9 +239,6 @@ void ide_pio_bytes(ide_drive_t *drive, struct ide_cmd *cmd, unsigned nr_bytes = min(len, cursg->length - cmd->cursg_ofs); int page_is_high; - if (nr_bytes > PAGE_SIZE) - nr_bytes = PAGE_SIZE; - page = sg_page(cursg); offset = cursg->offset + cmd->cursg_ofs; @@ -249,6 +246,8 @@ void ide_pio_bytes(ide_drive_t *drive, struct ide_cmd *cmd, page = nth_page(page, (offset >> PAGE_SHIFT)); offset %= PAGE_SIZE; + nr_bytes = min_t(unsigned, nr_bytes, (PAGE_SIZE - offset)); + page_is_high = PageHighMem(page); if (page_is_high) local_irq_save(flags); |