Re: [PATCH 3/15] qd65xx: fix deadlock on error handling

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Bartlomiej Zolnierkiewicz wrote:
On Wednesday 03 October 2007, Jeff Garzik wrote:
Bartlomiej Zolnierkiewicz wrote:

ACK everything else (that I snipped)...

@@ -303,6 +281,7 @@ static void qd6580_set_pio_mode(ide_driv
static int __init qd_testreg(int port)
 {
+	static DEFINE_SPINLOCK(qd65xx_lock);
 	unsigned long flags;
 	u8 savereg, readreg;
At this point, the lock is largely pointless, isn't it?

Seems like you might as well use local_irq_save/restore.

Yeah.


[PATCH] qd65xx: remove pointless qd_{read,write}_reg() (take 2)

These functions are atomic so locking is pointless (noticed by Sergei).

v2:
We can now just use local_irq_save/restore() in qd_testreg() (noticed by Jeff).

Cc: Sergei Shtylyov <sshtylyov@xxxxxxxxxxxxx>
Cc: Jeff Garzik <jeff@xxxxxxxxxx>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@xxxxxxxxx>

ACK


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