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| author |   Heiner Kallweit <hkallweit1@gmail.com> | 2021-12-02 10:53:05 +0100 |
|---|---|---|
| committer |   Wolfram Sang <wsa@kernel.org> | 2021-12-09 15:51:16 +0100 |
| commit | 8c7a89678f3befa42a05da67724bf501e3187023 (patch) | |
| tree | d64239832149947e8a2316994bb6d2db85d2291d /drivers/i2c/busses/i2c-i801.c | |
| parent | i2c: exynos5: Mention Exynos850 and ExynosAutoV9 in Kconfig (diff) | |
| download | linux-dev-8c7a89678f3befa42a05da67724bf501e3187023.tar.xz linux-dev-8c7a89678f3befa42a05da67724bf501e3187023.zip | |
i2c: i801: Don't read back cleared status in i801_check_pre()
I see no need to read back the registers to verify that the bits
have actually been cleared. I can't imagine any scenario where
the bits would remain set after a write to them.
Whilst at it, change involved syslog messages to use pci_dbg() et al.
to simplify them.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Jean Delvare <jdelvare@suse.de>
Tested-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Diffstat (limited to 'drivers/i2c/busses/i2c-i801.c')
| -rw-r--r-- | drivers/i2c/busses/i2c-i801.c | 22 |
1 files changed, 3 insertions, 19 deletions
diff --git a/drivers/i2c/busses/i2c-i801.c b/drivers/i2c/busses/i2c-i801.c index 930c6edbe4c6..b452f36c9c73 100644 --- a/drivers/i2c/busses/i2c-i801.c +++ b/drivers/i2c/busses/i2c-i801.c @@ -328,22 +328,14 @@ static int i801_check_pre(struct i801_priv *priv) status = inb_p(SMBHSTSTS(priv)); if (status & SMBHSTSTS_HOST_BUSY) { - dev_err(&priv->pci_dev->dev, "SMBus is busy, can't use it!\n"); + pci_err(priv->pci_dev, "SMBus is busy, can't use it!\n"); return -EBUSY; } status &= STATUS_FLAGS; if (status) { - dev_dbg(&priv->pci_dev->dev, "Clearing status flags (%02x)\n", - status); + pci_dbg(priv->pci_dev, "Clearing status flags (%02x)\n", status); outb_p(status, SMBHSTSTS(priv)); - status = inb_p(SMBHSTSTS(priv)) & STATUS_FLAGS; - if (status) { - dev_err(&priv->pci_dev->dev, - "Failed clearing status flags (%02x)\n", - status); - return -EBUSY; - } } /* @@ -356,16 +348,8 @@ static int i801_check_pre(struct i801_priv *priv) if (priv->features & FEATURE_SMBUS_PEC) { status = inb_p(SMBAUXSTS(priv)) & SMBAUXSTS_CRCE; if (status) { - dev_dbg(&priv->pci_dev->dev, - "Clearing aux status flags (%02x)\n", status); + pci_dbg(priv->pci_dev, "Clearing aux status flags (%02x)\n", status); outb_p(status, SMBAUXSTS(priv)); - status = inb_p(SMBAUXSTS(priv)) & SMBAUXSTS_CRCE; - if (status) { - dev_err(&priv->pci_dev->dev, - "Failed clearing aux status flags (%02x)\n", - status); - return -EBUSY; - } } } |