ixgbe: Don't call kmap() on page allocated with GFP_ATOMIC

Pages allocated with GFP_ATOMIC cannot come from Highmem. This is why
there is no need to call kmap() on them.

Therefore, don't call kmap() on rx_buffer->page() and instead use a
plain page_address() to get the kernel address.

Suggested-by: Ira Weiny <ira.weiny@intel.com>
Suggested-by: Alexander Duyck <alexander.duyck@gmail.com>
Signed-off-by: Fabio M. De Francesco <fmdefrancesco@gmail.com>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Reviewed-by: Alexander Duyck <alexanderduyck@fb.com>
Tested-by: Gurucharan <gurucharanx.g@intel.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>

diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c
index 04f453eabef64e91786bd0dbc497512777d81538..cb5c707538a5402fbef5ec1e144809b2bd5a404e 100644 (file)
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c
@@ -1964,15 +1964,13 @@ static bool ixgbe_check_lbtest_frame(struct ixgbe_rx_buffer *rx_buffer,
 
        frame_size >>= 1;
 
-       data = kmap(rx_buffer->page) + rx_buffer->page_offset;
+       data = page_address(rx_buffer->page) + rx_buffer->page_offset;
 
        if (data[3] != 0xFF ||
            data[frame_size + 10] != 0xBE ||
            data[frame_size + 12] != 0xAF)
                match = false;
 
-       kunmap(rx_buffer->page);
-
        return match;
 }