net: phy: let genphy_c45_read_link manage the devices to check

Let genphy_c45_read_link manage the devices to check, this removes overhead from callers. Add C22EXT to the list of excluded devices because it doesn't implement the status register. According to the 802.3 clause 45 spec registers 29.0 - 29.4 are reserved. At the moment we have very few clause 45 PHY drivers, so we are lacking experience whether other drivers will have to exclude further devices, or may need to check PHY XS. If we should figure out that list of devices to check needs to be configurable, I think best will be to add a device list member to struct phy_driver. v2: - adjusted commit message - exclude also device C22EXT from link checking

Heiner Kallweit committed 7 years ago

Commit 998a8a81 parent 71bd1064 files · +14 −18Browse files

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include/uapi/linux/mdio.h+2−0

@@ -123,6 +123,8 @@ · 122 unmodified lines
123	#define MDIO_DEVS_TC MDIO_DEVS_PRESENT(MDIO_MMD_TC)	123	#define MDIO_DEVS_TC MDIO_DEVS_PRESENT(MDIO_MMD_TC)
124	#define MDIO_DEVS_AN MDIO_DEVS_PRESENT(MDIO_MMD_AN)	124	#define MDIO_DEVS_AN MDIO_DEVS_PRESENT(MDIO_MMD_AN)
125	#define MDIO_DEVS_C22EXT MDIO_DEVS_PRESENT(MDIO_MMD_C22EXT)	125	#define MDIO_DEVS_C22EXT MDIO_DEVS_PRESENT(MDIO_MMD_C22EXT)
		126	#define MDIO_DEVS_VEND1 MDIO_DEVS_PRESENT(MDIO_MMD_VEND1)
		127	#define MDIO_DEVS_VEND2 MDIO_DEVS_PRESENT(MDIO_MMD_VEND2)
126		128
127	/* Control register 2. */	129	/* Control register 2. */
128	#define MDIO_PMA_CTRL2_TYPE 0x000f /* PMA/PMD type selection */	130	#define MDIO_PMA_CTRL2_TYPE 0x000f /* PMA/PMD type selection */