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authorJeff Garzik <jeff@garzik.org>2008-02-29 19:10:51 -0500
committerJeff Garzik <jeff@garzik.org>2008-02-29 19:10:51 -0500
commitb445c56815d84b9fce40707f99811bdc354458e0 (patch)
treef8e9e9137a11417f4bfd422245d251d13a8f2177
parent931506d3b2208362efc678ee863ee42a90755e89 (diff)
[libata] wrap kmap_atomic(KM_IRQ0) with local_irq_save/restore()
Interrupts must be disabled if using kmap_atomic(KM_IRQ0), but that was not the case in a few code paths coming directly from ATA driver interrupt handlers (which use spin_lock rather than spin_lock_irqsave). Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
-rw-r--r--drivers/ata/libata-scsi.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c
index 0562b0a49f3..7b1f1ee8131 100644
--- a/drivers/ata/libata-scsi.c
+++ b/drivers/ata/libata-scsi.c
@@ -1694,12 +1694,17 @@ void ata_scsi_rbuf_fill(struct ata_scsi_args *args,
u8 *rbuf;
unsigned int buflen, rc;
struct scsi_cmnd *cmd = args->cmd;
+ unsigned long flags;
+
+ local_irq_save(flags);
buflen = ata_scsi_rbuf_get(cmd, &rbuf);
memset(rbuf, 0, buflen);
rc = actor(args, rbuf, buflen);
ata_scsi_rbuf_put(cmd, rbuf);
+ local_irq_restore(flags);
+
if (rc == 0)
cmd->result = SAM_STAT_GOOD;
args->done(cmd);
@@ -2473,6 +2478,9 @@ static void atapi_qc_complete(struct ata_queued_cmd *qc)
if ((scsicmd[0] == INQUIRY) && ((scsicmd[1] & 0x03) == 0)) {
u8 *buf = NULL;
unsigned int buflen;
+ unsigned long flags;
+
+ local_irq_save(flags);
buflen = ata_scsi_rbuf_get(cmd, &buf);
@@ -2490,6 +2498,8 @@ static void atapi_qc_complete(struct ata_queued_cmd *qc)
}
ata_scsi_rbuf_put(cmd, buf);
+
+ local_irq_restore(flags);
}
cmd->result = SAM_STAT_GOOD;