From: Matthew Wilcox <matthew@wil.cx>
Date: Wed, 15 Aug 2007 18:56:59 +0000 (-0600)
Subject: [SCSI] qlogicfas: Close narrow race in release
X-Git-Tag: v2.6.24-rc1~1290^2~69
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=c131993b4cbfb6d564619e609b3d0b471ec52c5d;p=platform%2Fkernel%2Flinux-3.10.git

[SCSI] qlogicfas: Close narrow race in release

We were releasing the IRQ before removing the host, so commands could
still be coming in which would never be seen by the interrupt handler.
Just remove the host before releasing the IRQ to close this race.

Signed-off-by: Matthew Wilcox <matthew@wil.cx>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
---

diff --git a/drivers/scsi/qlogicfas.c b/drivers/scsi/qlogicfas.c
index 94baca8..1e874f1 100644
--- a/drivers/scsi/qlogicfas.c
+++ b/drivers/scsi/qlogicfas.c
@@ -166,6 +166,7 @@ static int qlogicfas_release(struct Scsi_Host *shost)
 {
 	struct qlogicfas408_priv *priv = get_priv_by_host(shost);
 
+	scsi_remove_host(shost);
 	if (shost->irq) {
 		qlogicfas408_disable_ints(priv);	
 		free_irq(shost->irq, shost);
@@ -174,7 +175,6 @@ static int qlogicfas_release(struct Scsi_Host *shost)
 		free_dma(shost->dma_channel);
 	if (shost->io_port && shost->n_io_port)
 		release_region(shost->io_port, shost->n_io_port);
-	scsi_remove_host(shost);
 	scsi_host_put(shost);
 
 	return 0;