Re: [Qemu-devel] [PATCH] hw/omap_gpio: Fix infinite recursion when doing 8/16 bit reads

[Anthony Liguori]

On 11/07/2011 07:25 AM, Peter Maydell wrote:
> Fix a long-standing bug which meant that any attempt to do an
> 8 or 16 bit read from the OMAP GPIO module would cause qemu to
> crash due to an infinite recursion.
>
> Signed-off-by: Peter Maydell<address@hidden>

Applied.  Thanks.

Regards,

Anthony Liguori

> ---
> This has actually been in the code since the original OMAP2 support
> was added in 2008; we've never noticed before because the kernel happened
> to always do 32 bit accesses...
> Long term we should fix this by conversion to MemoryRegion; this is
> the minimally invasive fix for 1.0.
>
>   hw/omap_gpio.c |    2 +-
>   1 files changed, 1 insertions(+), 1 deletions(-)
>
> diff --git a/hw/omap_gpio.c b/hw/omap_gpio.c
> index d775df6..d630748 100644
> --- a/hw/omap_gpio.c
> +++ b/hw/omap_gpio.c
> @@ -510,7 +510,7 @@ static void omap2_gpio_module_write(void *opaque, 
> target_phys_addr_t addr,
>
>   static uint32_t omap2_gpio_module_readp(void *opaque, target_phys_addr_t addr)
>   {
> -    return omap2_gpio_module_readp(opaque, addr)>>  ((addr&  3)<<  3);
> +    return omap2_gpio_module_read(opaque, addr&  ~3)>>  ((addr&  3)<<  3);
>   }
>
>   static void omap2_gpio_module_writep(void *opaque, target_phys_addr_t addr,