Re: [PATCH] rio: typo in bitwise AND expression.
From: Patrick vd Lageweg
Date: Thu Nov 23 2006 - 09:11:27 EST
On Wed, Nov 22, 2006 at 11:58:56PM +0100, Willy Tarreau wrote:
Seems ok.
Signed-off-by: Patrick vd Lageweg <patrick@xxxxxxxxxxxx>
Patrick
> Hi Rogier,
>
> here's a patch to fix a typo in rio_linux which affects both
> kernel 2.4 and 2.6. It's not big deal it seems as it only
> affects the irq-less path.
>
> I found this one like that :
>
> $ grep -r '[^&]&[^&]*![^=]' drivers/char/
>
> I'm sure others will find more efficient rules to catch such
> errors.
>
> Regards,
> Willy
>
> From 4fb85842b76ad28893ea2aeaeb6dbc4e3f5a2dee Mon Sep 17 00:00:00 2001
> From: Willy Tarreau <w@xxxxxx>
> Date: Wed, 22 Nov 2006 23:54:48 +0100
> Subject: [PATCH] rio: typo in bitwise AND expression.
>
> The line :
>
> hp->Mode &= !RIO_PCI_INT_ENABLE;
>
> is obviously wrong as RIO_PCI_INT_ENABLE=0x04 and is used as a bitmask
> 2 lines before. Getting no IRQ would not disable RIO_PCI_INT_ENABLE
> but rather RIO_PCI_BOOT_FROM_RAM which equals 0x01.
>
> Obvious fix is to change ! for ~.
>
> Signed-off-by: Willy Tarreau <w@xxxxxx>
> ---
> drivers/char/rio/rio_linux.c | 2 +-
> 1 files changed, 1 insertions(+), 1 deletions(-)
>
> diff --git a/drivers/char/rio/rio_linux.c b/drivers/char/rio/rio_linux.c
> index 7ac68cb..3228fad 100644
> --- a/drivers/char/rio/rio_linux.c
> +++ b/drivers/char/rio/rio_linux.c
> @@ -1143,7 +1143,7 @@ #endif /* PCI */
> rio_dprintk(RIO_DEBUG_INIT, "Enabling interrupts on rio card.\n");
> hp->Mode |= RIO_PCI_INT_ENABLE;
> } else
> - hp->Mode &= !RIO_PCI_INT_ENABLE;
> + hp->Mode &= ~RIO_PCI_INT_ENABLE;
> rio_dprintk(RIO_DEBUG_INIT, "New Mode: %x\n", hp->Mode);
> rio_start_card_running(hp);
> }
> --
> 1.4.2.4
>
> -
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