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ide: Fix IDE PIO size calculation

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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>
This commit is contained in:
Steven J. Hill 2013-06-20 10:30:37 -05:00 committed by David S. Miller
parent 99bfdd8786
commit 1581208b2f
1 changed files with 2 additions and 3 deletions
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5
drivers/ide/ide-taskfile.c
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@ -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);