[PATCH] i40e: Fix 32 bit shift compilation warnings

From: Joe Perches
Date: Fri Aug 30 2013 - 21:47:41 EST


When dma_addr_t is a 32 bit value, >> 32 emits compiler warnings
Use ((addr>>16) >>16) to avoid this.

I presume the macro should actually use the kernel.h
macro upper_32_bits() eventually.

Signed-off-by: Joe Perches <joe@xxxxxxxxxxx>
---
drivers/net/ethernet/intel/i40e/i40e_hmc.h | 2 +-
drivers/net/ethernet/intel/i40e/i40e_type.h | 4 ++--
2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/intel/i40e/i40e_hmc.h b/drivers/net/ethernet/intel/i40e/i40e_hmc.h
index 745fb355..2f1b72f 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_hmc.h
+++ b/drivers/net/ethernet/intel/i40e/i40e_hmc.h
@@ -123,7 +123,7 @@ struct i40e_hmc_info {
#define I40E_SET_PF_SD_ENTRY(hw, pa, sd_index, type) \
{ \
u32 val1, val2, val3; \
- val1 = (u32)((pa) >> sizeof(u32) * 8); \
+ val1 = (u32)(I40E_HI_DWORD(pa)); \
val2 = (u32)(pa) | (I40E_HMC_MAX_BP_COUNT << \
I40E_PFHMC_SDDATALOW_PMSDBPCOUNT_SHIFT) | \
((((type) == I40E_SD_TYPE_PAGED) ? 0 : 1) << \
diff --git a/drivers/net/ethernet/intel/i40e/i40e_type.h b/drivers/net/ethernet/intel/i40e/i40e_type.h
index 36e35cc..4263cf7 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_type.h
+++ b/drivers/net/ethernet/intel/i40e/i40e_type.h
@@ -78,8 +78,8 @@ typedef void (*I40E_ADMINQ_CALLBACK)(struct i40e_hw *, struct i40e_aq_desc *);
#define I40E_ETH_LENGTH_OF_ADDRESS 6

/* Data type manipulation macros. */
-#define I40E_HI_DWORD(x) ((u32)(((x)>>32)&0xFFFFFFFF))
-#define I40E_LO_DWORD(x) ((u32)((x)&0xFFFFFFFF))
+#define I40E_HI_DWORD(x) ((u32)((((x) >> 16) >> 16) & 0xFFFFFFFF))
+#define I40E_LO_DWORD(x) ((u32)((x) & 0xFFFFFFFF))

#define I40E_HI_WORD(x) ((u16)(((x)>>16)&0xFFFF))
#define I40E_DESC_UNUSED(R) \


--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/