From mboxrd@z Thu Jan 1 00:00:00 1970 From: Colin King Date: Fri, 16 Nov 2018 18:42:23 +0000 Subject: [PATCH][i3c-next] i3c: master: fix mask operation by using the correct operator Message-Id: <20181116184223.28240-1-colin.king@canonical.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Vitor Soares , Boris Brezillon Cc: kernel-janitors@vger.kernel.org, linux-kernel@vger.kernel.org From: Colin Ian King The masking operation on status is using a bitwise 'or' rather than a bitwise 'and' operator, and hence the result is always non-zero which is probably not what is intended. Fix this by using the correct operator. Detected by CoverityScan, CID#1475523 ("Wrong operator used") Fixes: 88acc98a712a ("i3c: master: Add driver for Synopsys DesignWare IP") Signed-off-by: Colin Ian King --- drivers/i3c/master/dw-i3c-master.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/i3c/master/dw-i3c-master.c b/drivers/i3c/master/dw-i3c-master.c index 0153e6e9de52..b532e2c9cf5c 100644 --- a/drivers/i3c/master/dw-i3c-master.c +++ b/drivers/i3c/master/dw-i3c-master.c @@ -1085,7 +1085,7 @@ static irqreturn_t dw_i3c_master_irq_handler(int irq, void *dev_id) spin_lock(&master->xferqueue.lock); dw_i3c_master_end_xfer_locked(master, status); - if (status | INTR_TRANSFER_ERR_STAT) + if (status & INTR_TRANSFER_ERR_STAT) writel(INTR_TRANSFER_ERR_STAT, master->regs + INTR_STATUS); spin_unlock(&master->xferqueue.lock); -- 2.19.1