On 01/09/2010 05:32 PM, Mikael Pettersson wrote:
When sata_promise encounters an overrun or underrun error it translates that to a libata AC_ERR_HSM, causing a hard reset. Since over/under-runs were thought to be rare and transient, this action seemed reasonable. Unfortunately it turns out that the controller throws overrun errors when e.g. hal polls a CD or DVD writer containing blank media, causing long sequences of hard resets and retries before EH finally gives up. This patch updates sata_promise to classify over/under-runs as AC_ERR_OTHER instead. This allows libata EH and upper layers to retry or fail the operation as they see fit without the disruption caused by repeated hard resets. This fixes a problem using a DVD-RAM drive with sata_promise, reported by Thomas Schorpp. I also tested it on a DVD-RW drive. Signed-off-by: Mikael Pettersson<mikpe@xxxxxxxx> Tested-by: thomas schorpp<thomas.schorpp@xxxxxxxxxxxxxx> --- drivers/ata/sata_promise.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
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