[PATCH] crypto: qat - fix bug in ADF_RING_SIZE_BYTES_MIN macro

[PATCH] crypto: qat - fix bug in ADF_RING_SIZE_BYTES_MIN macro

[Tadeusz Struk]

From: Bruce Allan <bruce.w.allan@intel.com>

The subject macro mistakenly compares the passed-in ring size in bytes
with ADF_RING_SIZE_4K which is 0x6 (an internal representation of 4KB)
rather than comparing with the intended value of 4096.

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Signed-off-by: Tadeusz Struk <tadeusz.struk@intel.com>
---
 .../qat/qat_common/adf_transport_access_macros.h   |    5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/crypto/qat/qat_common/adf_transport_access_macros.h b/drivers/crypto/qat/qat_common/adf_transport_access_macros.h
index 160c9a3..6ad7e4e 100644
--- a/drivers/crypto/qat/qat_common/adf_transport_access_macros.h
+++ b/drivers/crypto/qat/qat_common/adf_transport_access_macros.h
@@ -97,8 +97,9 @@
 #define ADF_RING_SIZE_IN_BYTES_TO_SIZE(SIZE) ((1 << (SIZE - 1)) >> 7)
 
 /* Minimum ring bufer size for memory allocation */
-#define ADF_RING_SIZE_BYTES_MIN(SIZE) ((SIZE < ADF_RING_SIZE_4K) ? \
-				ADF_RING_SIZE_4K : SIZE)
+#define ADF_RING_SIZE_BYTES_MIN(SIZE) \
+	((SIZE < ADF_SIZE_TO_RING_SIZE_IN_BYTES(ADF_RING_SIZE_4K)) ? \
+		ADF_SIZE_TO_RING_SIZE_IN_BYTES(ADF_RING_SIZE_4K) : SIZE)
 #define ADF_RING_SIZE_MODULO(SIZE) (SIZE + 0x6)
 #define ADF_SIZE_TO_POW(SIZE) ((((SIZE & 0x4) >> 1) | ((SIZE & 0x4) >> 2) | \
 				SIZE) & ~0x4)

Re: [PATCH] crypto: qat - fix bug in ADF_RING_SIZE_BYTES_MIN macro

[Herbert Xu]

On Fri, Jul 24, 2015 at 01:18:25PM -0700, Tadeusz Struk wrote:
> From: Bruce Allan <bruce.w.allan@intel.com>
> 
> The subject macro mistakenly compares the passed-in ring size in bytes
> with ADF_RING_SIZE_4K which is 0x6 (an internal representation of 4KB)
> rather than comparing with the intended value of 4096.
> 
> Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
> Signed-off-by: Tadeusz Struk <tadeusz.struk@intel.com>

Applied.
-- 
Email: Herbert Xu <herbert@gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt