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Message-ID: <uabuw9ff2.fsf_-_@dragon.akana.de>
Date: Tue, 19 Jun 2007 16:39:45 +0200
From: Ingo Korb <ml@...na.de>
To: Jiri Slaby <jirislaby@...il.com>
Cc: Andrew Morton <akpm@...ux-foundation.org>,
linux-kernel@...r.kernel.org, Alan Cox <alan@...rguk.ukuu.org.uk>
Subject: [PATCH 1/1] Char: istallion, init+locking fixes (try 2)
Move brdp->iosize assignment in stli_initecp up a few lines to stop the
driver from requesting an I/O region of length 0.
Remove spin_lock_irqsave/spin_unlock_irqrestore from __stli_sendcmd as
all users of that function take the lock already.
Signed-off-by: Ingo Korb <ml@...na.de>
---
diff --git a/drivers/char/istallion.c b/drivers/char/istallion.c
index 7b279d1..becba24 100644
--- a/drivers/char/istallion.c
+++ b/drivers/char/istallion.c
@@ -2166,14 +2166,10 @@ static void __stli_sendcmd(struct stlibrd *brdp, struct stliport *portp, unsigne
cdkhdr_t __iomem *hdrp;
cdkctrl_t __iomem *cp;
unsigned char __iomem *bits;
- unsigned long flags;
-
- spin_lock_irqsave(&brd_lock, flags);
if (test_bit(ST_CMDING, &portp->state)) {
printk(KERN_ERR "STALLION: command already busy, cmd=%x!\n",
(int) cmd);
- spin_unlock_irqrestore(&brd_lock, flags);
return;
}
@@ -2194,7 +2190,6 @@ static void __stli_sendcmd(struct stlibrd *brdp, struct stliport *portp, unsigne
writeb(readb(bits) | portp->portbit, bits);
set_bit(ST_CMDING, &portp->state);
EBRDDISABLE(brdp);
- spin_unlock_irqrestore(&brd_lock, flags);
}
static void stli_sendcmd(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback)
@@ -3218,13 +3213,13 @@ static int stli_initecp(struct stlibrd *brdp)
goto err;
}
+ brdp->iosize = ECP_IOSIZE;
+
if (!request_region(brdp->iobase, brdp->iosize, "istallion")) {
retval = -EIO;
goto err;
}
- brdp->iosize = ECP_IOSIZE;
-
/*
* Based on the specific board type setup the common vars to access
* and enable shared memory. Set all board specific information now
-
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