spi: dw: Enable interrupts in accordance with DMA xfer mode
authorSerge Semin <Sergey.Semin@baikalelectronics.ru>
Fri, 22 May 2020 00:07:51 +0000 (03:07 +0300)
committerMark Brown <broonie@kernel.org>
Fri, 22 May 2020 12:45:53 +0000 (13:45 +0100)
commit43dba9f3f98c2b184a19f856f06fe22817bfd9e0
treee4c9538f799f1021c5a2d73c47bc607b93bd1381
parent05897c710e8e095abf80937e23068deb600f7b0c
spi: dw: Enable interrupts in accordance with DMA xfer mode

It's pointless to track the Tx overrun interrupts if Rx-only SPI
transfer is issued. Similarly there is no need in handling the Rx
overrun/underrun interrupts if Tx-only SPI transfer is executed.
So lets unmask the interrupts only if corresponding SPI
transactions are implied.

Co-developed-by: Georgy Vlasov <Georgy.Vlasov@baikalelectronics.ru>
Signed-off-by: Georgy Vlasov <Georgy.Vlasov@baikalelectronics.ru>
Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>
Cc: Ramil Zaripov <Ramil.Zaripov@baikalelectronics.ru>
Cc: Alexey Malahov <Alexey.Malahov@baikalelectronics.ru>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Paul Burton <paulburton@kernel.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: linux-mips@vger.kernel.org
Cc: devicetree@vger.kernel.org
Link: https://lore.kernel.org/r/20200522000806.7381-3-Sergey.Semin@baikalelectronics.ru
Signed-off-by: Mark Brown <broonie@kernel.org>
drivers/spi/spi-dw-mid.c