* [2.6.0-test11][patch] no DRQ after issuing WRITE
@ 2003-12-15 18:52 Daniel Tram Lux
0 siblings, 0 replies; only message in thread
From: Daniel Tram Lux @ 2003-12-15 18:52 UTC (permalink / raw)
To: linux-kernel
Hi,
I had the following problem:
hda: no DRQ after issuing WRITE
ide0: reset: success
hda: status timeout: status=0xd0 { Busy }
hda: no DRQ after issuing WRITE
ide0: reset: success
the following patch cured this problem...
Regards
Daniel Lux
--- linux-2.6.0-test11.org/drivers/ide/ide-iops.c 2003-10-08 21:24:04.000000000 +0200
+++ linux-2.6.0-test11/drivers/ide/ide-iops.c 2003-12-15 19:36:02.000000000 +0100
@@ -645,12 +645,22 @@
if ((stat = hwif->INB(IDE_STATUS_REG)) & BUSY_STAT) {
local_irq_set(flags);
timeout += jiffies;
- while ((stat = hwif->INB(IDE_STATUS_REG)) & BUSY_STAT) {
+ stat = hwif->INB(IDE_STATUS_REG);
+ while (stat & BUSY_STAT) {
if (time_after(jiffies, timeout)) {
- local_irq_restore(flags);
- *startstop = DRIVER(drive)->error(drive, "status timeout", stat);
- return 1;
+ /*
+ * do one more status read in case we were interrupted between last
+ * stat = hwif->INB(IDE_STATUS_REG) and time_after(jiffies, timeout)
+ * in wich case the timeout might have been shorter than specified.
+ */
+ if ((stat = hwif->INB(IDE_STATUS_REG)) & BUSY_STAT) {
+ local_irq_restore(flags);
+ *startstop = DRIVER(drive)->error(drive, "status timeout", stat);
+ return 1;
+ }
}
+ else
+ stat = hwif->INB(IDE_STATUS_REG);
}
local_irq_restore(flags);
}
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