To move the list iterator variable into the list_for_each_entry_*() macro in the future it should be avoided to use the list iterator variable after the loop body.
To *never* use the list iterator variable after the loop it was concluded to use a separate iterator variable instead of a found boolean [1].
This removes the need to use a found variable and simply checking if the variable was set, can determine if the break/goto was hit.
Link: https://lore.kernel.org/all/CAHk-=wgRr_D8CB-D9Kg-c=EHreAsk5SqXPwr9Y7k9sA6cWX... [1] Signed-off-by: Jakob Koschel jakobkoschel@gmail.com --- drivers/misc/atmel-ssc.c | 19 +++++++++---------- 1 file changed, 9 insertions(+), 10 deletions(-)
diff --git a/drivers/misc/atmel-ssc.c b/drivers/misc/atmel-ssc.c index d6cd5537126c..343e25555fbb 100644 --- a/drivers/misc/atmel-ssc.c +++ b/drivers/misc/atmel-ssc.c @@ -25,25 +25,24 @@ static LIST_HEAD(ssc_list);
struct ssc_device *ssc_request(unsigned int ssc_num) { - int ssc_valid = 0; - struct ssc_device *ssc; + struct ssc_device *ssc = NULL, *iter;
mutex_lock(&user_lock); - list_for_each_entry(ssc, &ssc_list, list) { - if (ssc->pdev->dev.of_node) { - if (of_alias_get_id(ssc->pdev->dev.of_node, "ssc") + list_for_each_entry(iter, &ssc_list, list) { + if (iter->pdev->dev.of_node) { + if (of_alias_get_id(iter->pdev->dev.of_node, "ssc") == ssc_num) { - ssc->pdev->id = ssc_num; - ssc_valid = 1; + iter->pdev->id = ssc_num; + ssc = iter; break; } - } else if (ssc->pdev->id == ssc_num) { - ssc_valid = 1; + } else if (iter->pdev->id == ssc_num) { + ssc = iter; break; } }
- if (!ssc_valid) { + if (!ssc) { mutex_unlock(&user_lock); pr_err("ssc: ssc%d platform device is missing\n", ssc_num); return ERR_PTR(-ENODEV);