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authorMasahiro Yamada <yamada.masahiro@socionext.com>2018-12-06 06:55:26 +0300
committerWolfram Sang <wsa@the-dreams.de>2018-12-07 01:14:59 +0300
commitcd8843f541cc0ef057e27f1afba46374bbb84219 (patch)
treea110d8df03db4882e4caaeb21460e2407736d786 /drivers/i2c/busses/i2c-uniphier.c
parentc2a653deaa81f5a750c0dfcbaf9f8e5195cbe4a5 (diff)
downloadlinux-cd8843f541cc0ef057e27f1afba46374bbb84219.tar.xz
i2c: uniphier-f: fill TX-FIFO only in IRQ handler for repeated START
- For a repeated START condition, this controller starts data transfer immediately after the slave address is written to the TX-FIFO. - Once the TX-FIFO empty interrupt is asserted, the controller makes a pause even if additional data are written to the TX-FIFO. Given those circumstances, the data after a repeated START may not be transferred if the interrupt is asserted while the TX-FIFO is being filled up. A more reliable way is to append TX data only in the interrupt handler. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Diffstat (limited to 'drivers/i2c/busses/i2c-uniphier.c')
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