From: Eddie James <eajames@linux.ibm.com>
Date: Tue, 9 Feb 2021 17:12:34 +0000 (-0600)
Subject: hwmon: (occ) Start sequence number at one
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=75028ef4583091c355ac78ef03b64fc8f1f87909;p=linux.git

hwmon: (occ) Start sequence number at one

Initialize the sequence number at one, rather than zero, in order
to prevent false matches with the zero-initialized OCC SRAM
buffer before the OCC is fully initialized.

Signed-off-by: Eddie James <eajames@linux.ibm.com>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20210209171235.20624-4-eajames@linux.ibm.com
Signed-off-by: Joel Stanley <joel@jms.id.au>
---

diff --git a/drivers/hwmon/occ/common.c b/drivers/hwmon/occ/common.c
index f1ac153d0b568..7e73418ee0ad8 100644
--- a/drivers/hwmon/occ/common.c
+++ b/drivers/hwmon/occ/common.c
@@ -1151,6 +1151,8 @@ int occ_setup(struct occ *occ, const char *name)
 {
 	int rc;
 
+	/* start with 1 to avoid false match with zero-initialized SRAM buffer */
+	occ->seq_no = 1;
 	mutex_init(&occ->lock);
 	occ->groups[0] = &occ->group;