diff options
| author | Joel Fernandes <joelf@ti.com> | 2014-03-07 10:28:46 -0600 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2014-03-10 20:17:13 +0800 |
| commit | 26a05489ee0eb2a69b729438e63b1038b472fa57 (patch) | |
| tree | fd8bf272681f2eb72ccb10ddeec398f1dffeca22 | |
| parent | 6e4e603a9a99c6e27a74c1a813a7c751d85a721d (diff) | |
crypto: omap-sham - Map SG pages if they are HIGHMEM before accessing
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 <joelf@ti.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
| -rw-r--r-- | drivers/crypto/omap-sham.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/crypto/omap-sham.c b/drivers/crypto/omap-sham.c index 4e2067df300d..710d86386965 100644 --- a/drivers/crypto/omap-sham.c +++ b/drivers/crypto/omap-sham.c @@ -636,11 +636,17 @@ 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) { + vaddr = kmap_atomic(sg_page(ctx->sg)); + count = omap_sham_append_buffer(ctx, - sg_virt(ctx->sg) + ctx->offset, + vaddr + ctx->offset, ctx->sg->length - ctx->offset); + + kunmap_atomic((void *)vaddr); + if (!count) break; ctx->offset += count; |