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mtd: rawnand: qcom: Fix DMA sync on FLASH_STATUS register read
commit bc36860 upstream. After each codeword NAND_FLASH_STATUS is read for possible operational failures. But there is no DMA sync for CPU operation before reading it and this leads to incorrect or older copy of DMA buffer in reg_read_buf. This patch adds the DMA sync on reg_read_buf for CPU before reading it. Fixes: 5bc36b2 ("mtd: rawnand: qcom: check for operation errors in case of raw read") Cc: stable@vger.kernel.org Signed-off-by: Praveenkumar I <ipkumar@codeaurora.org> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/1602230872-25616-1-git-send-email-ipkumar@codeaurora.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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