Char: istallion, init+locking fixes

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@akana.de>
Cc: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/drivers/char/istallion.c b/drivers/char/istallion.c
index 8094099..3c66f40 100644 (file)
--- a/drivers/char/istallion.c
+++ b/drivers/char/istallion.c
@@ -2163,14 +2163,10 @@ 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;
        }
 
@@ -2191,7 +2187,6 @@ 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)
@@ -3215,13 +3210,13 @@ 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