diff mbox series

[net-next,v3,5/6] net: phy: microchip_t1s: remove unnecessary interrupts disabling code

Message ID 20230524144539.62618-6-Parthiban.Veerasooran@microchip.com (mailing list archive)
State Superseded
Delegated to: Netdev Maintainers
Headers show
Series microchip_t1s: Update on Microchip 10BASE-T1S PHY driver | expand

Checks

Context Check Description
netdev/series_format success Posting correctly formatted
netdev/tree_selection success Clearly marked for net-next
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 8 this patch: 8
netdev/cc_maintainers success CCed 8 of 8 maintainers
netdev/build_clang success Errors and warnings before: 8 this patch: 8
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 8 this patch: 8
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 26 lines checked
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0

Commit Message

Parthiban Veerasooran May 24, 2023, 2:45 p.m. UTC
By default, except Reset Complete interrupt in the Interrupt Mask 2
Register all other interrupts are disabled/masked. As Reset Complete
status is already handled, it doesn't make sense to disable it.

Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Parthiban Veerasooran <Parthiban.Veerasooran@microchip.com>
---
 drivers/net/phy/microchip_t1s.c | 14 +-------------
 1 file changed, 1 insertion(+), 13 deletions(-)

Comments

Ramón Nordin Rodriguez May 25, 2023, 6:30 p.m. UTC | #1
On Wed, May 24, 2023 at 08:15:38PM +0530, Parthiban Veerasooran wrote:
> By default, except Reset Complete interrupt in the Interrupt Mask 2
> Register all other interrupts are disabled/masked. As Reset Complete
> status is already handled, it doesn't make sense to disable it.
> 
> Reviewed-by: Andrew Lunn <andrew@lunn.ch>
> Signed-off-by: Parthiban Veerasooran <Parthiban.Veerasooran@microchip.com>
> ---

Reviewed-by: Ramón Nordin Rodriguez <ramon.nordin.rodriguez@ferroamp.se>
Tested-by: Ramón Nordin Rodriguez <ramon.nordin.rodriguez@ferroamp.se>

Testing has been pretty rudamentary, but the procedure has been as
follows:
    * Hotplug 2 devices
    * Unload and reload the lkm
    * Ping 2 devices over ipv6 link local addresses
All testing has been performed with the EVB-LAN8670-USB
diff mbox series

Patch

diff --git a/drivers/net/phy/microchip_t1s.c b/drivers/net/phy/microchip_t1s.c
index 05a88b561993..6f9e197d8623 100644
--- a/drivers/net/phy/microchip_t1s.c
+++ b/drivers/net/phy/microchip_t1s.c
@@ -12,8 +12,6 @@ 
 
 #define PHY_ID_LAN867X_REVB1 0x0007C162
 
-#define LAN867X_REG_IRQ_1_CTL 0x001C
-#define LAN867X_REG_IRQ_2_CTL 0x001D
 #define LAN867X_REG_STS2 0x0019
 
 #define LAN867x_RESET_COMPLETE_STS BIT(11)
@@ -106,17 +104,7 @@  static int lan867x_revb1_config_init(struct phy_device *phydev)
 			return err;
 	}
 
-	/* None of the interrupts in the lan867x phy seem relevant.
-	 * Other phys inspect the link status and call phy_trigger_machine
-	 * in the interrupt handler.
-	 * This phy does not support link status, and thus has no interrupt
-	 * for it either.
-	 * So we'll just disable all interrupts on the chip.
-	 */
-	err = phy_write_mmd(phydev, MDIO_MMD_VEND2, LAN867X_REG_IRQ_1_CTL, 0xFFFF);
-	if (err != 0)
-		return err;
-	return phy_write_mmd(phydev, MDIO_MMD_VEND2, LAN867X_REG_IRQ_2_CTL, 0xFFFF);
+	return 0;
 }
 
 static int lan867x_read_status(struct phy_device *phydev)