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Message-Id: <20220510091654.8498-5-warp5tw@gmail.com>
Date: Tue, 10 May 2022 17:16:49 +0800
From: Tyrone Ting <warp5tw@...il.com>
To: avifishman70@...il.com, tmaimon77@...il.com, tali.perry1@...il.com,
venture@...gle.com, yuenn@...gle.com, benjaminfair@...gle.com,
robh+dt@...nel.org, krzysztof.kozlowski@...onical.com,
wsa@...nel.org, andriy.shevchenko@...ux.intel.com,
jarkko.nikula@...ux.intel.com, semen.protsenko@...aro.org,
sven@...npeter.dev, jie.deng@...el.com, jsd@...ihalf.com,
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warp5tw@...il.com, tali.perry@...oton.com, Avi.Fishman@...oton.com,
tomer.maimon@...oton.com, KWLIU@...oton.com, JJLIU0@...oton.com,
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Cc: openbmc@...ts.ozlabs.org, linux-i2c@...r.kernel.org,
devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v4 4/9] i2c: npcm: Fix timeout calculation
From: Tali Perry <tali.perry1@...il.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@...il.com>
Reported-by: kernel test robot <lkp@...el.com>
---
drivers/i2c/busses/i2c-npcm7xx.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/i2c/busses/i2c-npcm7xx.c b/drivers/i2c/busses/i2c-npcm7xx.c
index 1f92c84317e4..eaec051e080d 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;
--
2.17.1
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