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| author | Tom Rini <trini@konsulko.com> | 2021-02-21 11:17:07 -0500 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2021-02-21 11:17:07 -0500 |
| commit | b732c8780c3f7b47b00bd59e5f6ad7d6ec099d68 (patch) | |
| tree | 2e4d72720d9254f7ba8be5a981368d77d92f91dc /drivers/i2c/at91_i2c.c | |
| parent | 72993e8e03845f82c3ccf7c72f205c9afd8da6d6 (diff) | |
| parent | 2147a16983d17bcb0438607aa7760494afc27014 (diff) | |
Merge tag 'for-v2021.04' of https://gitlab.denx.de/u-boot/custodians/u-boot-i2c
i2c changes for v2021.04
new feature:
- Allow disabling driver model for I2C in SPL
fixes:
- i2c-gpio: Fix GPIO output
- at91: fix crash when using 'i2c probe'
Diffstat (limited to 'drivers/i2c/at91_i2c.c')
| -rw-r--r-- | drivers/i2c/at91_i2c.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/i2c/at91_i2c.c b/drivers/i2c/at91_i2c.c index aca8de9436..6b4c0e4804 100644 --- a/drivers/i2c/at91_i2c.c +++ b/drivers/i2c/at91_i2c.c @@ -51,6 +51,10 @@ static int at91_i2c_xfer_msg(struct at91_i2c_bus *bus, struct i2c_msg *msg) u32 i; int ret = 0; + /* if there is no message to send/receive, just exit quietly */ + if (msg->len == 0) + return ret; + readl(®->sr); if (is_read) { writel(TWI_CR_START, ®->cr); |