diff options
| author | Claudiu Beznea <claudiu.beznea@microchip.com> | 2022-01-18 14:08:12 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-01-27 13:05:41 +0300 |
| commit | f864b6130498e6c688bcb2a41fa3afbae6b12fa3 (patch) | |
| tree | dcff5ef4867153cfbc3a9a3202fb87282535ba85 /drivers/net/phy | |
| parent | ed27539e5a4b1ab255b9d73b4ca8c12716c0d817 (diff) | |
| download | linux-f864b6130498e6c688bcb2a41fa3afbae6b12fa3.tar.xz | |
net: phy: micrel: use kszphy_suspend()/kszphy_resume for irq aware devices
commit f1131b9c23fb4a3540a774828ff49f421619f902 upstream.
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/net/phy')
| -rw-r--r-- | drivers/net/phy/micrel.c | 36 |
1 files changed, 18 insertions, 18 deletions
diff --git a/drivers/net/phy/micrel.c b/drivers/net/phy/micrel.c index aec0fcefdccd..e2ac61f44c94 100644 --- a/drivers/net/phy/micrel.c +++ b/drivers/net/phy/micrel.c @@ -1547,8 +1547,8 @@ 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, @@ -1562,8 +1562,8 @@ 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, @@ -1577,8 +1577,8 @@ 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, @@ -1609,8 +1609,8 @@ 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 */ @@ -1623,8 +1623,8 @@ 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", @@ -1638,8 +1638,8 @@ 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", @@ -1669,8 +1669,8 @@ 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, @@ -1685,8 +1685,8 @@ 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, }, { @@ -1704,7 +1704,7 @@ 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, @@ -1732,7 +1732,7 @@ 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, |