A-Team_Digital_Solutions/android_kernel_motorola_sm6375
Watch
2
0
Fork
You've already forked android_kernel_motorola_sm6375
 0
mirror of https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git synced 2026-10-30 03:27:44 -04:00
Code Issues Projects Releases Packages Wiki Activity

tx4939ide: Do not use zero count PRD entry

Browse source 
This fixes data corruption on some heavy load.

Signed-off-by: Atsushi Nemoto <[email protected]>
Cc: stable <[email protected]>
Cc: [email protected]
Signed-off-by: Bartlomiej Zolnierkiewicz <[email protected]>
This commit is contained in:
Atsushi Nemoto 2008-12-29 20:27:28 +01:00 • committed by Bartlomiej Zolnierkiewicz
commit a0fce792b5
1 changed files with 6 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

6
drivers/ide/tx4939ide.c
View file

@ -259,6 +259,12 @@ static int tx4939ide_build_dmatable(ide_drive_t *drive, struct request *rq)
bcount = 0x10000 - (cur_addr & 0xffff);
if (bcount > cur_len)
bcount = cur_len;
/*
* This workaround for zero count seems required.
* (standard ide_build_dmatable do it too)
*/
if ((bcount & 0xffff) == 0x0000)
bcount = 0x8000;
*table++ = bcount & 0xffff;
*table++ = cur_addr;
cur_addr += bcount;