diff options
Diffstat (limited to 'target/linux/ath79/patches-5.10/930-ar8216-make-reg-access-atomic.patch')
| -rw-r--r-- | target/linux/ath79/patches-5.10/930-ar8216-make-reg-access-atomic.patch | 59 |
1 files changed, 0 insertions, 59 deletions
diff --git a/target/linux/ath79/patches-5.10/930-ar8216-make-reg-access-atomic.patch b/target/linux/ath79/patches-5.10/930-ar8216-make-reg-access-atomic.patch deleted file mode 100644 index 02f763534e..0000000000 --- a/target/linux/ath79/patches-5.10/930-ar8216-make-reg-access-atomic.patch +++ /dev/null @@ -1,59 +0,0 @@ -From b3797d1a92afe97c173b00fdb7824cedba24eef0 Mon Sep 17 00:00:00 2001 -From: Chuanhong Guo <gch981213@gmail.com> -Date: Sun, 20 Sep 2020 01:00:45 +0800 -Subject: [PATCH] ath79: ar8216: make switch register access atomic - -due to some unknown reason these register accesses sometimes fail -on the integrated switch without this patch. - -THIS ONLY WORKS ON ATH79 AND MAY BREAK THE DRIVER ON OTHER PLATFORMS! -The mdio bus on ath79 works in polling mode and doesn't rely on -any interrupt. This patch breaks the driver on any mdio master -with interrupts used. - ---- ---- a/drivers/net/phy/ar8216.c -+++ b/drivers/net/phy/ar8216.c -@@ -252,6 +252,7 @@ ar8xxx_mii_write32(struct ar8xxx_priv *p - u32 - ar8xxx_read(struct ar8xxx_priv *priv, int reg) - { -+ unsigned long flags; - struct mii_bus *bus = priv->mii_bus; - u16 r1, r2, page; - u32 val; -@@ -259,11 +260,13 @@ ar8xxx_read(struct ar8xxx_priv *priv, in - split_addr((u32) reg, &r1, &r2, &page); - - mutex_lock(&bus->mdio_lock); -+ local_irq_save(flags); - - bus->write(bus, 0x18, 0, page); - wait_for_page_switch(); - val = ar8xxx_mii_read32(priv, 0x10 | r2, r1); - -+ local_irq_restore(flags); - mutex_unlock(&bus->mdio_lock); - - return val; -@@ -272,17 +275,20 @@ ar8xxx_read(struct ar8xxx_priv *priv, in - void - ar8xxx_write(struct ar8xxx_priv *priv, int reg, u32 val) - { -+ unsigned long flags; - struct mii_bus *bus = priv->mii_bus; - u16 r1, r2, page; - - split_addr((u32) reg, &r1, &r2, &page); - - mutex_lock(&bus->mdio_lock); -+ local_irq_save(flags); - - bus->write(bus, 0x18, 0, page); - wait_for_page_switch(); - ar8xxx_mii_write32(priv, 0x10 | r2, r1, val); - -+ local_irq_restore(flags); - mutex_unlock(&bus->mdio_lock); - } - |