From: Alan Cox Date: Wed, 8 Aug 2007 13:30:31 +0000 (+0100) Subject: libata: Note that our cache flush code needs fixing up X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=4f34337b1f6f7c1e0f2e3c938eb9eadd340593fe;p=linux-beck.git libata: Note that our cache flush code needs fixing up Remembered this while doing auditing and code review versus the specs Signed-off-by: Alan Cox Signed-off-by: Jeff Garzik --- diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index d2141a04fff1..c0f3c78a2be0 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -5906,6 +5906,10 @@ int ata_flush_cache(struct ata_device *dev) else cmd = ATA_CMD_FLUSH; + /* This is wrong. On a failed flush we get back the LBA of the lost + sector and we should (assuming it wasn't aborted as unknown) issue + a further flush command to continue the writeback until it + does not error */ err_mask = ata_do_simple_cmd(dev, cmd); if (err_mask) { ata_dev_printk(dev, KERN_ERR, "failed to flush cache\n");