Re: [Qemu-devel] [PATCH] hw/pxa2xx.c: Fix handling of R/WC bits in PMCR

[Anthony Liguori <anthony@codemonkey.ws>]

On 11/09/2011 02:46 PM, Peter Maydell wrote:
> Fix a bug in handling the write-one-to-clear bits in the PMCR
> which meant that we would always clear the bit even if the
> value written was a zero. Spotted by Coverity (see bug 887883).
>
> Signed-off-by: Peter Maydell<peter.maydell@linaro.org>

Applied.  Thanks.

Regards,

Anthony Liguori

> ---
>   hw/pxa2xx.c |    4 +++-
>   1 files changed, 3 insertions(+), 1 deletions(-)
>
> diff --git a/hw/pxa2xx.c b/hw/pxa2xx.c
> index bfc28a9..d38b922 100644
> --- a/hw/pxa2xx.c
> +++ b/hw/pxa2xx.c
> @@ -114,7 +114,9 @@ static void pxa2xx_pm_write(void *opaque, target_phys_addr_t addr,
>
>       switch (addr) {
>       case PMCR:
> -        s->pm_regs[addr>>  2]&= 0x15&  ~(value&  0x2a);
> +        /* Clear the write-one-to-clear bits... */
> +        s->pm_regs[addr>>  2]&= ~(value&  0x2a);
> +        /* ...and set the plain r/w bits */
>           s->pm_regs[addr>>  2] |= value&  0x15;
>           break;
>