path: root/drivers/net/ethernet/pensando
diff options
authorShannon Nelson <snelson@pensando.io>2021-10-01 11:05:52 -0700
committerDavid S. Miller <davem@davemloft.net>2021-10-02 14:00:21 +0100
commit36b20b7fb1c3cba2334f772face5f42f8e644a8f (patch)
tree6d6ff95657a1c06e754cf0f19157bccd4509fde5 /drivers/net/ethernet/pensando
parentionic: remove debug stats (diff)
ionic: check for binary values in FW ver string
If the PCI connection is broken, reading the FW version string will only get 0xff bytes, which shouldn't get printed. This checks the first byte and prints only the first 4 bytes if non-ASCII. Also, add a limit to the string length printed when a valid string is found, just in case it is not properly terminated. Signed-off-by: Shannon Nelson <snelson@pensando.io> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/pensando')
1 files changed, 14 insertions, 3 deletions
diff --git a/drivers/net/ethernet/pensando/ionic/ionic_main.c b/drivers/net/ethernet/pensando/ionic/ionic_main.c
index 6f07bf509efe..b6473c02c041 100644
--- a/drivers/net/ethernet/pensando/ionic/ionic_main.c
+++ b/drivers/net/ethernet/pensando/ionic/ionic_main.c
@@ -7,6 +7,7 @@
#include <linux/netdevice.h>
#include <linux/utsname.h>
#include <generated/utsrelease.h>
+#include <linux/ctype.h>
#include "ionic.h"
#include "ionic_bus.h"
@@ -450,13 +451,23 @@ int ionic_identify(struct ionic *ionic)
- dev_info(ionic->dev, "FW: %s\n", idev->dev_info.fw_version);
if (err) {
- dev_err(ionic->dev, "Cannot identify ionic: %dn", err);
+ dev_err(ionic->dev, "Cannot identify ionic: %d\n", err);
goto err_out;
+ if (isprint(idev->dev_info.fw_version[0]) &&
+ isascii(idev->dev_info.fw_version[0]))
+ dev_info(ionic->dev, "FW: %.*s\n",
+ (int)(sizeof(idev->dev_info.fw_version) - 1),
+ idev->dev_info.fw_version);
+ else
+ dev_info(ionic->dev, "FW: (invalid string) 0x%02x 0x%02x 0x%02x 0x%02x ...\n",
+ (u8)idev->dev_info.fw_version[0],
+ (u8)idev->dev_info.fw_version[1],
+ (u8)idev->dev_info.fw_version[2],
+ (u8)idev->dev_info.fw_version[3]);
err = ionic_lif_identify(ionic, IONIC_LIF_TYPE_CLASSIC,
if (err) {