On 6/17/20 7:39 AM, P J P wrote:
> From: Prasad J Pandit <p...@fedoraproject.org>
>
> Add nrf51_soc mmio read method to avoid NULL pointer dereference
> issue.
>
> Reported-by: Lei Sun <slei.cas...@gmail.com>
> Signed-off-by: Prasad J Pandit <p...@fedoraproject.org>
> ---
> hw/nvram/nrf51_nvm.c | 7 +++++++
> 1 file changed, 7 insertions(+)
>
> diff --git a/hw/nvram/nrf51_nvm.c b/hw/nvram/nrf51_nvm.c
> index f2283c1a8d..e813c7ec72 100644
> --- a/hw/nvram/nrf51_nvm.c
> +++ b/hw/nvram/nrf51_nvm.c
> @@ -274,6 +274,12 @@ static const MemoryRegionOps io_ops = {
> };
>
>
> +static uint64_t flash_read(void *opaque, hwaddr addr, unsigned size)
> +{
> + qemu_log_mask(LOG_UNIMP, "%s not implemented\n", __func__);
> + return 0;
This is a ROM device, shouldn't we return this instead?
return ldl_le_p(s->storage + offset);
> +}
> +
> static void flash_write(void *opaque, hwaddr offset, uint64_t value,
> unsigned int size)
> {
> @@ -300,6 +306,7 @@ static void flash_write(void *opaque, hwaddr offset,
> uint64_t value,
>
>
> static const MemoryRegionOps flash_ops = {
> + .read = flash_read,
> .write = flash_write,
> .valid.min_access_size = 4,
> .valid.max_access_size = 4,
>
