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authorClaudiu Beznea <claudiu.beznea@microchip.com>2022-01-18 14:08:12 +0300
committerDavid S. Miller <davem@davemloft.net>2022-01-19 17:23:34 +0300
commitf1131b9c23fb4a3540a774828ff49f421619f902 (patch)
tree99b493b5739289683de465ed06a41de47f30436b /drivers/net/phy/micrel.c
parent1771afd47430f5e95c9c3a2e3a8a63e67402d3fe (diff)
downloadlinux-f1131b9c23fb4a3540a774828ff49f421619f902.tar.xz
net: phy: micrel: use kszphy_suspend()/kszphy_resume for irq aware devices
On a setup with KSZ9131 and MACB drivers it happens on suspend path, from time to time, that the PHY interrupt arrives after PHY and MACB were suspended (PHY via genphy_suspend(), MACB via macb_suspend()). In this case the phy_read() at the beginning of kszphy_handle_interrupt() will fail (as MACB driver is suspended at this time) leading to phy_error() being called and a stack trace being displayed on console. To solve this .suspend/.resume functions for all KSZ devices implementing .handle_interrupt were replaced with kszphy_suspend()/kszphy_resume() which disable/enable interrupt before/after calling genphy_suspend()/genphy_resume(). The fix has been adapted for all KSZ devices which implements .handle_interrupt but it has been tested only on KSZ9131. Fixes: 59ca4e58b917 ("net: phy: micrel: implement generic .handle_interrupt() callback") Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/phy/micrel.c')
-rw-r--r--drivers/net/phy/micrel.c36
1 files changed, 18 insertions, 18 deletions
diff --git a/drivers/net/phy/micrel.c b/drivers/net/phy/micrel.c
index 4570cb9535b7..a7ebcdab415b 100644
--- a/drivers/net/phy/micrel.c
+++ b/drivers/net/phy/micrel.c
@@ -1726,8 +1726,8 @@ static struct phy_driver ksphy_driver[] = {
.config_init = kszphy_config_init,
.config_intr = kszphy_config_intr,
.handle_interrupt = kszphy_handle_interrupt,
- .suspend = genphy_suspend,
- .resume = genphy_resume,
+ .suspend = kszphy_suspend,
+ .resume = kszphy_resume,
}, {
.phy_id = PHY_ID_KSZ8021,
.phy_id_mask = 0x00ffffff,
@@ -1741,8 +1741,8 @@ static struct phy_driver ksphy_driver[] = {
.get_sset_count = kszphy_get_sset_count,
.get_strings = kszphy_get_strings,
.get_stats = kszphy_get_stats,
- .suspend = genphy_suspend,
- .resume = genphy_resume,
+ .suspend = kszphy_suspend,
+ .resume = kszphy_resume,
}, {
.phy_id = PHY_ID_KSZ8031,
.phy_id_mask = 0x00ffffff,
@@ -1756,8 +1756,8 @@ static struct phy_driver ksphy_driver[] = {
.get_sset_count = kszphy_get_sset_count,
.get_strings = kszphy_get_strings,
.get_stats = kszphy_get_stats,
- .suspend = genphy_suspend,
- .resume = genphy_resume,
+ .suspend = kszphy_suspend,
+ .resume = kszphy_resume,
}, {
.phy_id = PHY_ID_KSZ8041,
.phy_id_mask = MICREL_PHY_ID_MASK,
@@ -1788,8 +1788,8 @@ static struct phy_driver ksphy_driver[] = {
.get_sset_count = kszphy_get_sset_count,
.get_strings = kszphy_get_strings,
.get_stats = kszphy_get_stats,
- .suspend = genphy_suspend,
- .resume = genphy_resume,
+ .suspend = kszphy_suspend,
+ .resume = kszphy_resume,
}, {
.name = "Micrel KSZ8051",
/* PHY_BASIC_FEATURES */
@@ -1802,8 +1802,8 @@ static struct phy_driver ksphy_driver[] = {
.get_strings = kszphy_get_strings,
.get_stats = kszphy_get_stats,
.match_phy_device = ksz8051_match_phy_device,
- .suspend = genphy_suspend,
- .resume = genphy_resume,
+ .suspend = kszphy_suspend,
+ .resume = kszphy_resume,
}, {
.phy_id = PHY_ID_KSZ8001,
.name = "Micrel KSZ8001 or KS8721",
@@ -1817,8 +1817,8 @@ static struct phy_driver ksphy_driver[] = {
.get_sset_count = kszphy_get_sset_count,
.get_strings = kszphy_get_strings,
.get_stats = kszphy_get_stats,
- .suspend = genphy_suspend,
- .resume = genphy_resume,
+ .suspend = kszphy_suspend,
+ .resume = kszphy_resume,
}, {
.phy_id = PHY_ID_KSZ8081,
.name = "Micrel KSZ8081 or KSZ8091",
@@ -1848,8 +1848,8 @@ static struct phy_driver ksphy_driver[] = {
.config_init = ksz8061_config_init,
.config_intr = kszphy_config_intr,
.handle_interrupt = kszphy_handle_interrupt,
- .suspend = genphy_suspend,
- .resume = genphy_resume,
+ .suspend = kszphy_suspend,
+ .resume = kszphy_resume,
}, {
.phy_id = PHY_ID_KSZ9021,
.phy_id_mask = 0x000ffffe,
@@ -1864,8 +1864,8 @@ static struct phy_driver ksphy_driver[] = {
.get_sset_count = kszphy_get_sset_count,
.get_strings = kszphy_get_strings,
.get_stats = kszphy_get_stats,
- .suspend = genphy_suspend,
- .resume = genphy_resume,
+ .suspend = kszphy_suspend,
+ .resume = kszphy_resume,
.read_mmd = genphy_read_mmd_unsupported,
.write_mmd = genphy_write_mmd_unsupported,
}, {
@@ -1883,7 +1883,7 @@ static struct phy_driver ksphy_driver[] = {
.get_sset_count = kszphy_get_sset_count,
.get_strings = kszphy_get_strings,
.get_stats = kszphy_get_stats,
- .suspend = genphy_suspend,
+ .suspend = kszphy_suspend,
.resume = kszphy_resume,
}, {
.phy_id = PHY_ID_LAN8814,
@@ -1928,7 +1928,7 @@ static struct phy_driver ksphy_driver[] = {
.get_sset_count = kszphy_get_sset_count,
.get_strings = kszphy_get_strings,
.get_stats = kszphy_get_stats,
- .suspend = genphy_suspend,
+ .suspend = kszphy_suspend,
.resume = kszphy_resume,
}, {
.phy_id = PHY_ID_KSZ8873MLL,