Ingo Korb napsal(a):
> 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 <[email protected]>
> ---
> One thing I dislike about this driver: It polls its cards every jiffy to
> look for new data. The cards are able to use interrupts (some of the
> drivers for other OSes use them), but as far as I know there is no open
> documentation. Unfortunately the DOS driver (probably easiest to
> analyze) also uses polling. =(
>
>
> diff --git a/drivers/char/istallion.c b/drivers/char/istallion.c
> index 7b279d1..0bc1c37 100644
> --- a/drivers/char/istallion.c
> +++ b/drivers/char/istallion.c
> @@ -2168,8 +2168,6 @@ static void __stli_sendcmd(struct stlibrd *brdp, struct stliport *portp, unsigne
> unsigned char __iomem *bits;
> unsigned long flags;
Remove the flags and you will see the bug, you introduced ;).
> - 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);
> @@ -2194,7 +2192,6 @@ 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);
> }
regards,
--
http://www.fi.muni.cz/~xslaby/ Jiri Slaby
faculty of informatics, masaryk university, brno, cz
e-mail: jirislaby gmail com, gpg pubkey fingerprint:
B674 9967 0407 CE62 ACC8 22A0 32CC 55C3 39D4 7A7E
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