[dpdk-stable] patch 'net/bnxt: fix lock release on NVM write failure' has been queued to stable release 18.05.1

[Christian Ehrhardt]

Hi,

FYI, your patch has been queued to stable release 18.05.1

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 08/16/18. So please
shout if anyone has objections.

Thanks.

Christian Ehrhardt <christian.ehrhardt at canonical.com>

---
>From c11bdac58e36d2af9a43c733bd1942e8fc286401 Mon Sep 17 00:00:00 2001
From: Ajit Khaparde <ajit.khaparde at broadcom.com>
Date: Wed, 25 Jul 2018 18:15:46 -0700
Subject: [PATCH] net/bnxt: fix lock release on NVM write failure

[ upstream commit 4623c0d4b572e9bea28d59e6e54ae6d5dab2412e ]

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")

Signed-off-by: Ajit Khaparde <ajit.khaparde at broadcom.com>
Reviewed-by: Randy Schacher <stuart.schacher at 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 714871eb2..b800b1a51 100644
--- a/drivers/net/bnxt/bnxt_hwrm.c
+++ b/drivers/net/bnxt/bnxt_hwrm.c
@@ -3384,14 +3384,6 @@ 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)
@@ -3404,6 +3396,14 @@ 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));
-- 
2.17.1