[PATCH net-next 2/9] bnxt_en: Retry failed NVM_INSTALL_UPDATE with defragmentation flag.

[Michael Chan]

From: Kshitij Soni <kshitij.s...@broadcom.com>

If the HWRM_NVM_INSTALL_UPDATE command fails with the error code
NVM_INSTALL_UPDATE_CMD_ERR_CODE_FRAG_ERR, retry the command with
a new flag to allow defragmentation.  Since we are checking the
response for error code, we also need to take the mutex until
we finish reading the response.

Signed-off-by: Kshitij Soni <kshitij.s...@broadcom.com>
Signed-off-by: Michael Chan <michael.c...@broadcom.com>
---
 drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c | 32 ++++++++++++++++++-----
 1 file changed, 26 insertions(+), 6 deletions(-)

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c 
b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
index 7aa248d..4b45b88 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
@@ -1578,17 +1578,37 @@ static int bnxt_flash_package_from_file(struct 
net_device *dev,
        bnxt_hwrm_cmd_hdr_init(bp, &install, HWRM_NVM_INSTALL_UPDATE, -1, -1);
        install.install_type = cpu_to_le32(install_type);
 
-       rc = hwrm_send_message(bp, &install, sizeof(install),
-                              INSTALL_PACKAGE_TIMEOUT);
-       if (rc)
-               return -EOPNOTSUPP;
+       mutex_lock(&bp->hwrm_cmd_lock);
+       rc = _hwrm_send_message(bp, &install, sizeof(install),
+                               INSTALL_PACKAGE_TIMEOUT);
+       if (rc) {
+               rc = -EOPNOTSUPP;
+               goto flash_pkg_exit;
+       }
+
+       if (resp->error_code) {
+               u8 error_code = ((struct hwrm_err_output *)resp)->cmd_err;
+
+               if (error_code == NVM_INSTALL_UPDATE_CMD_ERR_CODE_FRAG_ERR) {
+                       install.flags |= cpu_to_le16(
+                              NVM_INSTALL_UPDATE_REQ_FLAGS_ALLOWED_TO_DEFRAG);
+                       rc = _hwrm_send_message(bp, &install, sizeof(install),
+                                               INSTALL_PACKAGE_TIMEOUT);
+                       if (rc) {
+                               rc = -EOPNOTSUPP;
+                               goto flash_pkg_exit;
+                       }
+               }
+       }
 
        if (resp->result) {
                netdev_err(dev, "PKG install error = %d, problem_item = %d\n",
                           (s8)resp->result, (int)resp->problem_item);
-               return -ENOPKG;
+               rc = -ENOPKG;
        }
-       return 0;
+flash_pkg_exit:
+       mutex_unlock(&bp->hwrm_cmd_lock);
+       return rc;
 }
 
 static int bnxt_flash_device(struct net_device *dev,
-- 
1.8.3.1