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 <[email protected]> Suggested-by: Alexander Duyck <[email protected]> Signed-off-by: Fabio M. De Francesco <[email protected]> Reviewed-by: Ira Weiny <[email protected]> Reviewed-by: Alexander Duyck <[email protected]> Tested-by: Gurucharan <[email protected]> (A Contingent worker at Intel) Signed-off-by: Tony Nguyen <[email protected]>
josf · Aug 18, 2022 · 03f5171 · 03f5171
1 parent e34cfee
commit 03f5171
Showing 1 changed file with 1 addition and 3 deletions.
diff --git 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;
 }