[PATCH v2 -next] i2c: designware: Remove code duplication

Jan Dabros
2022-03-10T22:10:10Z

Simplify code by moving common part to one function.

Signed-off-by: Jan Dabros <jsd@semihalf.com>
Suggested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
v1->v2:
* Add kudos for Andy who suggested this change
* Get rid of extra function and move common code to psp_send_i2c_req
* Update commit message and commit title
(was "i2c:designware: Add helper to remove redundancy")
drivers/i2c/busses/i2c-designware-amdpsp.c | 35 ++++++++++------------
1 file changed, 15 insertions(+), 20 deletions(-)

diff --git a/drivers/i2c/busses/i2c-designware-amdpsp.c b/drivers/i2c/busses/i2c-designware-amdpsp.c
index c64e459afb5c..5c32255c3239 100644
--- a/drivers/i2c/busses/i2c-designware-amdpsp.c
+++ b/drivers/i2c/busses/i2c-designware-amdpsp.c
@@ -214,17 +214,28 @@ static int psp_send_i2c_req(enum psp_i2c_req_type i2c_req_type)
PSP_I2C_REQ_RETRY_DELAY_US,
PSP_I2C_REQ_RETRY_CNT * PSP_I2C_REQ_RETRY_DELAY_US,
0, req);
- if (ret)
+ if (ret) {
+ dev_err(psp_i2c_dev, "Timed out waiting for PSP to %s I2C bus\n",
+ (i2c_req_type == PSP_I2C_REQ_ACQUIRE) ?
+ "release" : "acquire");
goto cleanup;
+ }

ret = status;
- if (ret)
+ if (ret) {
+ dev_err(psp_i2c_dev, "PSP communication error\n");
goto cleanup;
+ }

dev_dbg(psp_i2c_dev, "Request accepted by PSP after %ums\n",
jiffies_to_msecs(jiffies - start));

cleanup:
+ if (ret) {
+ dev_err(psp_i2c_dev, "Assume i2c bus is for exclusive host usage\n");
+ psp_i2c_mbox_fail = true;
+ }
+
kfree(req);
return ret;
}
@@ -249,16 +260,8 @@ static int psp_acquire_i2c_bus(void)
};

status = psp_send_i2c_req(PSP_I2C_REQ_ACQUIRE);
- if (status) {
- if (status == -ETIMEDOUT)
- dev_err(psp_i2c_dev, "Timed out waiting for PSP to release I2C bus\n");
- else
- dev_err(psp_i2c_dev, "PSP communication error\n");
-
- dev_err(psp_i2c_dev, "Assume i2c bus is for exclusive host usage\n");
- psp_i2c_mbox_fail = true;
+ if (status)
goto cleanup;
- }

psp_i2c_sem_acquired = jiffies;
psp_i2c_access_count++;
@@ -294,16 +297,8 @@ static void psp_release_i2c_bus(void)

/* Send a release command to PSP */
status = psp_send_i2c_req(PSP_I2C_REQ_RELEASE);
- if (status) {
- if (status == -ETIMEDOUT)
- dev_err(psp_i2c_dev, "Timed out waiting for PSP to acquire I2C bus\n");
- else
- dev_err(psp_i2c_dev, "PSP communication error\n");
-
- dev_err(psp_i2c_dev, "Assume i2c bus is for exclusive host usage\n");
- psp_i2c_mbox_fail = true;
+ if (status)
goto cleanup;
- }

dev_dbg(psp_i2c_dev, "PSP semaphore held for %ums\n",
jiffies_to_msecs(jiffies - psp_i2c_sem_acquired));
--
2.31.0