diff options
| author | Roman Vivchar <rva333@protonmail.com> | 2026-07-09 16:31:29 +0300 |
|---|---|---|
| committer | Andi Shyti <andi.shyti@kernel.org> | 2026-07-15 00:21:51 +0200 |
| commit | deb35336b5bfed5db9231b5348bc1514db930797 (patch) | |
| tree | 6917bebe85e548c4d67f39c4f0dbc687841900d4 /drivers | |
| parent | 71356737a7a55c76fee847563e3d33f8e6dc6b6d (diff) | |
i2c: mediatek: fix WRRD for SoCs without auto_restart option
MediaTek mt65xx family SoCs have no auto restart, however, they still
support the WRRD mode in the hardware. Because auto_restart is set to 0,
the WRRD mode will be never enabled, leading to read errors.
Fix this by removing auto_restart check from the WRRD enable path.
Fixes: b49218365280 ("i2c: mediatek: fix potential incorrect use of I2C_MASTER_WRRD")
Signed-off-by: Roman Vivchar <rva333@protonmail.com>
Cc: <stable@vger.kernel.org> # v6.18+
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Andi Shyti <andi.shyti@kernel.org>
Link: https://lore.kernel.org/r/20260709-6572-6595-i2c-v2-1-b2fb8510d1d3@protonmail.com
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/i2c/busses/i2c-mt65xx.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/i2c/busses/i2c-mt65xx.c b/drivers/i2c/busses/i2c-mt65xx.c index 126040ca05f1..307925fb78e3 100644 --- a/drivers/i2c/busses/i2c-mt65xx.c +++ b/drivers/i2c/busses/i2c-mt65xx.c @@ -1258,7 +1258,7 @@ static int mtk_i2c_transfer(struct i2c_adapter *adap, i2c->auto_restart = i2c->dev_comp->auto_restart; /* checking if we can skip restart and optimize using WRRD mode */ - if (i2c->auto_restart && num == 2) { + if (num == 2) { if (!(msgs[0].flags & I2C_M_RD) && (msgs[1].flags & I2C_M_RD) && msgs[0].addr == msgs[1].addr) { i2c->auto_restart = 0; |