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ide-tape: fix potential fs requests bug

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ide-tape had a potential bug for fs requests when preparing the command
packet: it was writing the transfer length as a number of fixed blocks.
However, the block layer implies 512 byte blocks and ide-tape can have
other block sizes so account for that too.

ide-floppy does this calculation properly with the block size factor
(floppy->bs_factor).

Signed-off-by: Borislav Petkov <petkovbb@gmail.com>
This commit is contained in:
Borislav Petkov 2009-05-01 20:29:53 +02:00
parent 77f6bf57ba
commit 10c0b3437c
1 changed files with 1 additions and 1 deletions
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2
drivers/ide/ide-tape.c
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@ -586,7 +586,7 @@ static void ide_tape_create_rw_cmd(idetape_tape_t *tape,
struct ide_atapi_pc *pc, struct request *rq, struct ide_atapi_pc *pc, struct request *rq,
u8 opcode) u8 opcode)
{ {
unsigned int length = blk_rq_sectors(rq); unsigned int length = blk_rq_sectors(rq) / (tape->blk_size >> 9);
ide_init_pc(pc); ide_init_pc(pc);
put_unaligned(cpu_to_be32(length), (unsigned int *) &pc->c[1]); put_unaligned(cpu_to_be32(length), (unsigned int *) &pc->c[1]);