[dpdk-dev] [PATCH 3/5] net/bnxt: fix to release lock when alloc fails in NVM write

[Ajit Khaparde <ajit.khaparde@broadcom.com>]

In bnxt_hwrm_flash_nvram, before attempting to allocate a buffer
we are grabbing the rte_spinlock. And if the allocation fails we
are returning before releasing the spinlock. We avoid the situation
by calling HWRM_PREP which grabs the lock after the buffer is
allocated successfully.

Fixes: 19e6af01bb36 ("net/bnxt: support get/set EEPROM")
Cc: stable@dpdk.org

Reviewed-by: Randy Schacher <stuart.schacher@broadcom.com>
Signed-off-by: Ajit Khaparde <ajit.khaparde@broadcom.com>
---
 drivers/net/bnxt/bnxt_hwrm.c | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/drivers/net/bnxt/bnxt_hwrm.c b/drivers/net/bnxt/bnxt_hwrm.c
index 3f8e26ca3..5e8970ac3 100644
--- a/drivers/net/bnxt/bnxt_hwrm.c
+++ b/drivers/net/bnxt/bnxt_hwrm.c
@@ -3427,14 +3427,6 @@ int bnxt_hwrm_flash_nvram(struct bnxt *bp, uint16_t dir_type,
 	rte_iova_t dma_handle;
 	uint8_t *buf;
 
-	HWRM_PREP(req, NVM_WRITE);
-
-	req.dir_type = rte_cpu_to_le_16(dir_type);
-	req.dir_ordinal = rte_cpu_to_le_16(dir_ordinal);
-	req.dir_ext = rte_cpu_to_le_16(dir_ext);
-	req.dir_attr = rte_cpu_to_le_16(dir_attr);
-	req.dir_data_length = rte_cpu_to_le_32(data_len);
-
 	buf = rte_malloc("nvm_write", data_len, 0);
 	rte_mem_lock_page(buf);
 	if (!buf)
@@ -3447,6 +3439,14 @@ int bnxt_hwrm_flash_nvram(struct bnxt *bp, uint16_t dir_type,
 		return -ENOMEM;
 	}
 	memcpy(buf, data, data_len);
+
+	HWRM_PREP(req, NVM_WRITE);
+
+	req.dir_type = rte_cpu_to_le_16(dir_type);
+	req.dir_ordinal = rte_cpu_to_le_16(dir_ordinal);
+	req.dir_ext = rte_cpu_to_le_16(dir_ext);
+	req.dir_attr = rte_cpu_to_le_16(dir_attr);
+	req.dir_data_length = rte_cpu_to_le_32(data_len);
 	req.host_src_addr = rte_cpu_to_le_64(dma_handle);
 
 	rc = bnxt_hwrm_send_message(bp, &req, sizeof(req));
-- 
2.15.2 (Apple Git-101.1)