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Merge branch 'net-mdio-mdio-bcm-unimac-optimizations-and-clean-up'

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Justin Chen says:

====================
net: mdio: mdio-bcm-unimac: optimizations and clean up

Clean up mdio poll to use read_poll_timeout() and reduce the potential
poll time.
====================

Link: https://lore.kernel.org/r/20231213222744.2891184-1-justin.chen@broadcom.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Jakub Kicinski 2023-12-14 17:59:00 -08:00
commit 81d56f567a
1 changed files with 8 additions and 13 deletions
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21
drivers/net/mdio/mdio-bcm-unimac.c
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@ -73,24 +73,19 @@ static inline void unimac_mdio_start(struct unimac_mdio_priv *priv)
unimac_mdio_writel(priv, reg, MDIO_CMD);
}
static inline unsigned int unimac_mdio_busy(struct unimac_mdio_priv *priv)
{
return unimac_mdio_readl(priv, MDIO_CMD) & MDIO_START_BUSY;
}
static int unimac_mdio_poll(void *wait_func_data)
{
struct unimac_mdio_priv *priv = wait_func_data;
unsigned int timeout = 1000;
u32 val;
do {
if (!unimac_mdio_busy(priv))
return 0;
/*
* C22 transactions should take ~25 usec, will need to adjust
* if C45 support is added.
*/
udelay(30);
usleep_range(1000, 2000);
} while (--timeout);
return -ETIMEDOUT;
return read_poll_timeout(unimac_mdio_readl, val, !(val & MDIO_START_BUSY),
2000, 100000, false, priv, MDIO_CMD);
}
static int unimac_mdio_read(struct mii_bus *bus, int phy_id, int reg)