| commit | 9bd27cba1aeacb6b12d05f4e5ed6361072f08fe0 | |
| author | Borislav Petkov <petkovbb@gmail.com> | |
| Sun, 2 Nov 2008 20:40:07 +0000 (2 21:40 +0100) | ||
| committer | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | |
| Sun, 2 Nov 2008 20:40:07 +0000 (2 21:40 +0100) | ||
| tree | 33917b6981e58ad553a86c44c91f07b1ecb13847 | treesnapshot (tar.gz zip) |
| parent | 721d5dfe7e516954c501d5e9d0dfab379cf4241a | commitdiff |
ide-cd: fix DMA alignment regression
e5318b531b008c79d2a0c0df06a7b8628da38e2f ("ide: use the dma safe check for
REQ_TYPE_ATA_PC") introduced a regression which caused some ATAPI drives to
turn off DMA for REQ_TYPE_BLOCK_PC commands while burning and thus degrading
performance and ultimately causing an excessive amount of underruns.
The issue is documented also in:
http://bugzilla.kernel.org/show_bug.cgi?id=11742.
Signed-off-by: Borislav Petkov <petkovbb@gmail.com>
Cc: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Tested-by: Valerio Passini <valerio.passini@unicam.it>
[bart: fixup patch description per comments from Sergei Shtylyov]
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
e5318b531b008c79d2a0c0df06a7b8628da38e2f ("ide: use the dma safe check for
REQ_TYPE_ATA_PC") introduced a regression which caused some ATAPI drives to
turn off DMA for REQ_TYPE_BLOCK_PC commands while burning and thus degrading
performance and ultimately causing an excessive amount of underruns.
The issue is documented also in:
http://bugzilla.kernel.org/show_bug.cgi?id=11742.
Signed-off-by: Borislav Petkov <petkovbb@gmail.com>
Cc: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Tested-by: Valerio Passini <valerio.passini@unicam.it>
[bart: fixup patch description per comments from Sergei Shtylyov]
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
| drivers/ide/ide-cd.c | diffblobblamehistory |