diff mbox series

[v5,04/10] i2c: npcm: Fix timeout calculation

Message ID 20220517101142.28421-5-warp5tw@gmail.com
State New
Headers show
Series i2c: npcm: Bug fixes timeout, spurious interrupts | expand

Commit Message

Tyrone Ting May 17, 2022, 10:11 a.m. UTC 
From: Tali Perry <tali.perry1@gmail.com>

Use adap.timeout for timeout calculation instead of hard-coded
value of 35ms.

Fixes: 56a1485b102e ("i2c: npcm7xx: Add Nuvoton NPCM I2C controller driver")
Signed-off-by: Tali Perry <tali.perry1@gmail.com>
Signed-off-by: Tyrone Ting <kfting@nuvoton.com>
Reported-by: kernel test robot <lkp@intel.com>
---
 drivers/i2c/busses/i2c-npcm7xx.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

Comments

Wolfram Sang May 21, 2022, 5:52 a.m. UTC | #1 
On Tue, May 17, 2022 at 06:11:36PM +0800, Tyrone Ting wrote:
> From: Tali Perry <tali.perry1@gmail.com>
> 
> Use adap.timeout for timeout calculation instead of hard-coded
> value of 35ms.
> 
> Fixes: 56a1485b102e ("i2c: npcm7xx: Add Nuvoton NPCM I2C controller driver")
> Signed-off-by: Tali Perry <tali.perry1@gmail.com>
> Signed-off-by: Tyrone Ting <kfting@nuvoton.com>

Applied to for-next, thanks!

I dropped the Reported-by tag, doesn't look like test robot found this
issue.
Tyrone Ting May 21, 2022, 12:55 p.m. UTC | #2 
Hi Wolfram:

Thank you for your review.

Wolfram Sang <wsa@kernel.org> 於 2022年5月21日 週六 下午1:52寫道：
>
> On Tue, May 17, 2022 at 06:11:36PM +0800, Tyrone Ting wrote:
> > From: Tali Perry <tali.perry1@gmail.com>
> >
> > Use adap.timeout for timeout calculation instead of hard-coded
> > value of 35ms.
> >
> > Fixes: 56a1485b102e ("i2c: npcm7xx: Add Nuvoton NPCM I2C controller driver")
> > Signed-off-by: Tali Perry <tali.perry1@gmail.com>
> > Signed-off-by: Tyrone Ting <kfting@nuvoton.com>
>
> Applied to for-next, thanks!
>
> I dropped the Reported-by tag, doesn't look like test robot found this
> issue.
>

Best Regards,
Tyrone
diff mbox series

Patch

diff --git a/drivers/i2c/busses/i2c-npcm7xx.c b/drivers/i2c/busses/i2c-npcm7xx.c
index 550e4a4d1e01..489b4c8ad0ee 100644
--- a/drivers/i2c/busses/i2c-npcm7xx.c
+++ b/drivers/i2c/busses/i2c-npcm7xx.c
@@ -2047,7 +2047,7 @@  static int npcm_i2c_master_xfer(struct i2c_adapter *adap, struct i2c_msg *msgs,
 	u16 nwrite, nread;
 	u8 *write_data, *read_data;
 	u8 slave_addr;
-	int timeout;
+	unsigned long timeout;
 	int ret = 0;
 	bool read_block = false;
 	bool read_PEC = false;
@@ -2099,13 +2099,13 @@  static int npcm_i2c_master_xfer(struct i2c_adapter *adap, struct i2c_msg *msgs,
 	 * 9: bits per transaction (including the ack/nack)
 	 */
 	timeout_usec = (2 * 9 * USEC_PER_SEC / bus->bus_freq) * (2 + nread + nwrite);
-	timeout = max(msecs_to_jiffies(35), usecs_to_jiffies(timeout_usec));
+	timeout = max_t(unsigned long, bus->adap.timeout, usecs_to_jiffies(timeout_usec));
 	if (nwrite >= 32 * 1024 || nread >= 32 * 1024) {
 		dev_err(bus->dev, "i2c%d buffer too big\n", bus->num);
 		return -EINVAL;
 	}
 
-	time_left = jiffies + msecs_to_jiffies(DEFAULT_STALL_COUNT) + 1;
+	time_left = jiffies + timeout + 1;
 	do {
 		/*
 		 * we must clear slave address immediately when the bus is not
@@ -2268,7 +2268,7 @@  static int npcm_i2c_probe_bus(struct platform_device *pdev)
 	adap = &bus->adap;
 	adap->owner = THIS_MODULE;
 	adap->retries = 3;
-	adap->timeout = HZ;
+	adap->timeout = msecs_to_jiffies(35);
 	adap->algo = &npcm_i2c_algo;
 	adap->quirks = &npcm_i2c_quirks;
 	adap->algo_data = bus;