i2c: iproc: Fix i2c master read more than 63 bytes

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Use SMBUS_MASTER_DATA_READ.MASTER_RD_STATUS bit to check for RX
FIFO empty condition because SMBUS_MASTER_FIFO_CONTROL.MASTER_RX_PKT_COUNT
is not updated for read >= 64 bytes. This fixes the issue when trying to
read from the I2C slave more than 63 bytes.

Fixes: c24b8d574b ("i2c: iproc: Extend I2C read up to 255 bytes")
Cc: stable@kernel.org
Signed-off-by: Rayagonda Kokatanur <rayagonda.kokatanur@broadcom.com>
Reviewed-by: Ray Jui <ray.jui@broadcom.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>

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Rayagonda Kokatanur 2019-07-24 13:58:27 +05:30 • committed by Wolfram Sang

parent 3a5ff11be8

commit fd01eecdf9

1 changed files with 6 additions and 4 deletions

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drivers/i2c/busses/i2c-bcm-iproc.c

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