Gentle ping for this fix patch. Could it be accepted for -rc? Thanks.
-Joel
On 01/28/2014 05:43 PM, Joel Fernandes wrote:
> HIGHMEM pages may not be mapped so we must kmap them before accessing.
> This resolves a random OOPs error that was showing up during OpenSSL SHA
> tests.
>
> Signed-off-by: Joel Fernandes <jo...@ti.com>
> ---
> drivers/crypto/omap-sham.c | 12 +++++++++++-
> 1 file changed, 11 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/crypto/omap-sham.c b/drivers/crypto/omap-sham.c
> index 8bdde57..fcf6562 100644
> --- a/drivers/crypto/omap-sham.c
> +++ b/drivers/crypto/omap-sham.c
> @@ -636,11 +636,21 @@ static size_t omap_sham_append_buffer(struct
> omap_sham_reqctx *ctx,
> static size_t omap_sham_append_sg(struct omap_sham_reqctx *ctx)
> {
> size_t count;
> + const u8 *vaddr;
>
> while (ctx->sg) {
> + if (PageHighMem(sg_page(ctx->sg)))
> + vaddr = kmap_atomic(sg_page(ctx->sg));
> + else
> + vaddr = sg_virt(ctx->sg);
> +
> count = omap_sham_append_buffer(ctx,
> - sg_virt(ctx->sg) + ctx->offset,
> + vaddr + ctx->offset,
> ctx->sg->length - ctx->offset);
> +
> + if (PageHighMem(sg_page(ctx->sg)))
> + kunmap_atomic((void *)vaddr);
> +
> if (!count)
> break;
> ctx->offset += count;
>
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