From de2dc3feaea7deefcc816fb09167211965fdde9b Mon Sep 17 00:00:00 2001 From: Pascal Ernster Date: Tue, 3 Jan 2023 23:01:11 +0100 Subject: [PATCH] realtek: return correct error value for phy ops A behavioural change was introduced with commit 758c88b96963 ("realtek: Whitespace and codestyle cleanup") causing rtl838x_read_phy() and rtl838x_write_phy() to unconditionally return -ETIMEDOUT. As a result, probing the device during boot fails: Error setting up netdev, freeing it again. rtl838x-eth: probe of 1b00a300.ethernet failed with error -5 Fix the bootloop caused by this regression with kernel 5.15 on rtl838x devices, by properly returning 0 on success. Tested on a Netgear GS108T v3, a Netgear GS310TP v1, a Zyxel GS1900-8HP v1 and an HPE 1920-8G. Fixes: 758c88b969639d0e6b684669d2e54dd1be3102f4 ("realtek: Whitespace and codestyle cleanup") Tested-by: Stijn Segers Tested-by: Jan Hoffmann Signed-off-by: Pascal Ernster --- .../realtek/files-5.15/drivers/net/dsa/rtl83xx/rtl838x.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/target/linux/realtek/files-5.15/drivers/net/dsa/rtl83xx/rtl838x.c b/target/linux/realtek/files-5.15/drivers/net/dsa/rtl83xx/rtl838x.c index c1d6b0c554..cbd4543db4 100644 --- a/target/linux/realtek/files-5.15/drivers/net/dsa/rtl83xx/rtl838x.c +++ b/target/linux/realtek/files-5.15/drivers/net/dsa/rtl83xx/rtl838x.c @@ -1832,7 +1832,7 @@ int rtl838x_read_phy(u32 port, u32 page, u32 reg, u32 *val) timeout: mutex_unlock(&smi_lock); - return -ETIMEDOUT; + return err; } /* Write to a register in a page of the PHY */ @@ -1868,7 +1868,7 @@ int rtl838x_write_phy(u32 port, u32 page, u32 reg, u32 val) timeout: mutex_unlock(&smi_lock); - return -ETIMEDOUT; + return err; } /* Read an mmd register of a PHY */ -- 2.30.2