[net 08/10] ixgbe: fix reading of the buffer returned by the firmware
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STALE5464d
SUPERSEDED: 1 (0M)
From: Jeff Kirsher <hidden>
Date: 2011-11-03 00:20:09
Subsystem:
intel ethernet drivers, networking drivers, the rest · Maintainers:
Tony Nguyen, Przemek Kitszel, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
Revision v1 of 23 in this series; 1 review trailer.
Revisions (23)
From: Emil Tantilov <redacted> This patch fixes some issues found in the buffer read portion of ixgbe_host_interface_command() - use `bi` as the buffer index counter instead of `i` - add conversion to native cpu byte ordering on register read - fix conversion from bytes to dword - use dword_len instead of buf_len when reading the register Signed-off-by: Emil Tantilov <redacted> Tested-by: Phil Schmitt <redacted> Signed-off-by: Jeff Kirsher <redacted> --- drivers/net/ethernet/intel/ixgbe/ixgbe_common.c | 20 +++++++++++--------- 1 files changed, 11 insertions(+), 9 deletions(-)
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_common.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_common.c
index 834f044..f1365fe 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_common.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_common.c@@ -3344,7 +3344,7 @@ static u8 ixgbe_calculate_checksum(u8 *buffer, u32 length) static s32 ixgbe_host_interface_command(struct ixgbe_hw *hw, u32 *buffer, u32 length) { - u32 hicr, i; + u32 hicr, i, bi; u32 hdr_size = sizeof(struct ixgbe_hic_hdr); u8 buf_len, dword_len;
@@ -3398,9 +3398,9 @@ static s32 ixgbe_host_interface_command(struct ixgbe_hw *hw, u32 *buffer, dword_len = hdr_size >> 2; /* first pull in the header so we know the buffer length */ - for (i = 0; i < dword_len; i++) { - buffer[i] = IXGBE_READ_REG_ARRAY(hw, IXGBE_FLEX_MNG, i); - le32_to_cpus(&buffer[i]); + for (bi = 0; bi < dword_len; bi++) { + buffer[bi] = IXGBE_READ_REG_ARRAY(hw, IXGBE_FLEX_MNG, bi); + le32_to_cpus(&buffer[bi]); } /* If there is any thing in data position pull it in */
@@ -3414,12 +3414,14 @@ static s32 ixgbe_host_interface_command(struct ixgbe_hw *hw, u32 *buffer, goto out; } - /* Calculate length in DWORDs, add one for odd lengths */ - dword_len = (buf_len + 1) >> 2; + /* Calculate length in DWORDs, add 3 for odd lengths */ + dword_len = (buf_len + 3) >> 2; - /* Pull in the rest of the buffer (i is where we left off)*/ - for (; i < buf_len; i++) - buffer[i] = IXGBE_READ_REG_ARRAY(hw, IXGBE_FLEX_MNG, i); + /* Pull in the rest of the buffer (bi is where we left off)*/ + for (; bi <= dword_len; bi++) { + buffer[bi] = IXGBE_READ_REG_ARRAY(hw, IXGBE_FLEX_MNG, bi); + le32_to_cpus(&buffer[bi]); + } out: return ret_val;
--
1.7.6.4