Commit e162ea45 authored Dec 12, 2013 by Sana Venkat Raju

spi_qsd: Remove check for unaligned length during input_irq



QUP_IRQ complete is triggered before dmov_rx callback.
Which will initiate SPI to start next transfer, due to
this earlier DMOV_CMD is blocked and results in kernel panic.

Current Implementation  make sure that transfer complete waits
For DMOV callback only in case of aligned lengths ,This patch
ensures transfer trigger only after DMOV RX call back for
unaligned length also.

CRs-Fixed: 583126
Change-Id: I306a705d0eaf0eac33b2dbf335992254351cce20
Signed-off-by: Sana Venkat Raju <c_vsana@codeaurora.org>

parent bf850d5a

drivers/spi/spi_qsd.c

+0 −2

Original line number	Diff line number	Diff line
		@@ -1165,10 +1165,8 @@ static irqreturn_t msm_spi_input_irq(int irq, void *dev_id)
		if ((!dd->read_buf \|\| op & SPI_OP_MAX_INPUT_DONE_FLAG) &&
		(!dd->write_buf \|\| op & SPI_OP_MAX_OUTPUT_DONE_FLAG)) {
		msm_spi_ack_transfer(dd);
		if (dd->rx_unaligned_len == 0) {
		if (atomic_inc_return(&dd->rx_irq_called) == 1)
		return IRQ_HANDLED;
		}
		msm_spi_complete(dd);
		return IRQ_HANDLED;
		}