[PATCH v3 04/14] spi: Remove code duplication in spi_add_device*()

Andy Shevchenko
2023-07-11T17:19:54Z

The commit 0c79378c0199 ("spi: add ancillary device support")
added a dozen of duplicating lines of code. We may move them
to the __spi_add_device(). Note, that the code may be called
under the mutex.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
drivers/spi/spi.c | 32 ++++++++++----------------------
1 file changed, 10 insertions(+), 22 deletions(-)

diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c
index 6d74218cf38e..876d40d2c708 100644
--- a/drivers/spi/spi.c
+++ b/drivers/spi/spi.c
@@ -631,6 +631,16 @@ static int __spi_add_device(struct spi_device *spi)
struct device *dev = ctlr->dev.parent;
int status;

+ /* Chipselects are numbered 0..max; validate. */
+ if (spi_get_chipselect(spi, 0) >= ctlr->num_chipselect) {
+ dev_err(dev, "cs%d >= max %d\n", spi_get_chipselect(spi, 0),
+ ctlr->num_chipselect);
+ return -EINVAL;
+ }
+
+ /* Set the bus ID string */
+ spi_dev_set_name(spi);
+
/*
* We need to make sure there's no other device with this
* chipselect **BEFORE** we call setup(), else we'll trash
@@ -689,19 +699,8 @@ static int __spi_add_device(struct spi_device *spi)
int spi_add_device(struct spi_device *spi)
{
struct spi_controller *ctlr = spi->controller;
- struct device *dev = ctlr->dev.parent;
int status;

- /* Chipselects are numbered 0..max; validate. */
- if (spi_get_chipselect(spi, 0) >= ctlr->num_chipselect) {
- dev_err(dev, "cs%d >= max %d\n", spi_get_chipselect(spi, 0),
- ctlr->num_chipselect);
- return -EINVAL;
- }
-
- /* Set the bus ID string */
- spi_dev_set_name(spi);
-
mutex_lock(&ctlr->add_lock);
status = __spi_add_device(spi);
mutex_unlock(&ctlr->add_lock);
@@ -712,17 +711,6 @@ EXPORT_SYMBOL_GPL(spi_add_device);
static int spi_add_device_locked(struct spi_device *spi)
{
struct spi_controller *ctlr = spi->controller;
- struct device *dev = ctlr->dev.parent;
-
- /* Chipselects are numbered 0..max; validate. */
- if (spi_get_chipselect(spi, 0) >= ctlr->num_chipselect) {
- dev_err(dev, "cs%d >= max %d\n", spi_get_chipselect(spi, 0),
- ctlr->num_chipselect);
- return -EINVAL;
- }
-
- /* Set the bus ID string */
- spi_dev_set_name(spi);

WARN_ON(!mutex_is_locked(&ctlr->add_lock));
return __spi_add_device(spi);