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Re: [Qemu-block] [Qemu-devel] [PATCH] ahci: fix ICC mask definition
From: |
John Snow |
Subject: |
Re: [Qemu-block] [Qemu-devel] [PATCH] ahci: fix ICC mask definition |
Date: |
Thu, 30 Jul 2015 14:41:46 -0400 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.7.0 |
Peter: I assume you still want this for 2.4 to fix the clang warnings, yes?
On 07/21/2015 02:02 PM, John Snow wrote:
> There are likely others that could be updated, but we'll
> go with a light touch for 2.4 for now.
>
> Without the Unsigned specifier, this shifts bits into the
> signed bit, which makes clang unhappy and could cause
> unwanted behavior.
>
> Reported-by: Peter Maydell <address@hidden>
> Signed-off-by: John Snow <address@hidden>
> ---
> hw/ide/ahci.h | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/hw/ide/ahci.h b/hw/ide/ahci.h
> index 68d5074..79a463d 100644
> --- a/hw/ide/ahci.h
> +++ b/hw/ide/ahci.h
> @@ -127,7 +127,7 @@
> #define PORT_CMD_SPIN_UP (1 << 1) /* Spin up device */
> #define PORT_CMD_START (1 << 0) /* Enable port DMA engine */
>
> -#define PORT_CMD_ICC_MASK (0xf << 28) /* i/f ICC state mask */
> +#define PORT_CMD_ICC_MASK (0xfU << 28) /* i/f ICC state mask */
> #define PORT_CMD_ICC_ACTIVE (0x1 << 28) /* Put i/f in active state */
> #define PORT_CMD_ICC_PARTIAL (0x2 << 28) /* Put i/f in partial state */
> #define PORT_CMD_ICC_SLUMBER (0x6 << 28) /* Put i/f in slumber state */
>