[RFC/PATCH 2/7] enable honoring write cache setting of IDE drive
DORMANTno replies
From: Doug Maxey <hidden>
Date: 2005-01-28 18:16:22
- add hook in ide-taskfile:ide_cmd_ioctl() to call the new
function ide_write_cache().
drivers/ide/ide-taskfile.c | 10 ++++++++++
1 files changed, 10 insertions(+)
diff -X /home/dwm/lib/ide-excludes -Nwupar lk-2.6.11-rc2-bk5.a/drivers/ide/ide-taskfile.c lk-2.6.11-rc2-bk5.b/drivers/ide/ide-taskfile.c--- lk-2.6.11-rc2-bk5.a/drivers/ide/ide-taskfile.c 2005-01-26 13:19:34.000000000 -0600
+++ lk-2.6.11-rc2-bk5.b/drivers/ide/ide-taskfile.c 2005-01-28 11:19:55.907361320 -0600@@ -698,6 +698,16 @@ int ide_cmd_ioctl (ide_drive_t *drive, u if (copy_from_user(args, (void __user *)arg, 4)) return -EFAULT; + if ((args[0] == WIN_SETFEATURES) && + ((args[2] == SETFEATURES_EN_WCACHE) || + (args[2] == SETFEATURES_DIS_WCACHE))) { + /* + * Call the handler to support settings in the block layer. + */ + err = ide_write_cache (drive, (args[2] == SETFEATURES_EN_WCACHE)); + return err; + } + memset(&tfargs, 0, sizeof(ide_task_t)); tfargs.tfRegister[IDE_FEATURE_OFFSET] = args[2]; tfargs.tfRegister[IDE_NSECTOR_OFFSET] = args[3];