[PATCH] selftests: gpio: correctly check the type of /dev/gpiochipX

[Guixin Liu <kanie@linux.alibaba.com>]

/dev/gpiochipX is a character device, not a directory, so we should
use "test -c" instead of "test -d" to check for its existence;
otherwise, the current check will not work correctly when
/dev/gpiochipX is left over (e.g., as a stale device node).

Signed-off-by: Guixin Liu <kanie@linux.alibaba.com>
---
 tools/testing/selftests/gpio/gpio-aggregator.sh | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/tools/testing/selftests/gpio/gpio-aggregator.sh b/tools/testing/selftests/gpio/gpio-aggregator.sh
index 9b6f80ad9f8a..13d8e1607571 100755
--- a/tools/testing/selftests/gpio/gpio-aggregator.sh
+++ b/tools/testing/selftests/gpio/gpio-aggregator.sh
@@ -351,7 +351,7 @@ test "$(agg_get_chip_num_lines _sysfs.0)" = "1" || fail "number of lines is not
 test "$(agg_get_line_name _sysfs.0 0)" = "" || fail "line name is unset"
 echo "$(agg_configfs_dev_name _sysfs.0)" > "$SYSFS_AGG_DIR/delete_device"
 test -d $CONFIGFS_AGG_DIR/_sysfs.0 && fail "_sysfs.0 unexpectedly remains"
-test -d /dev/${CHIPNAME} && fail "/dev/${CHIPNAME} unexpectedly remains"
+test -c /dev/${CHIPNAME} && fail "/dev/${CHIPNAME} unexpectedly remains"
 
 echo "1.2.2. Complex creation/deletion"
 echo "chip0bank0_0 chip1_bank1 10-11" > "$SYSFS_AGG_DIR/new_device"
@@ -365,7 +365,7 @@ test "$(agg_get_line_name _sysfs.0 1)" = "" || fail "line name is unset"
 test "$(agg_get_line_name _sysfs.0 2)" = "" || fail "line name is unset"
 echo "$(agg_configfs_dev_name _sysfs.0)" > "$SYSFS_AGG_DIR/delete_device"
 test -d $CONFIGFS_AGG_DIR/_sysfs.0 && fail "_sysfs.0 unexpectedly remains"
-test -d /dev/${CHIPNAME} && fail "/dev/${CHIPNAME} unexpectedly remains"
+test -c /dev/${CHIPNAME} && fail "/dev/${CHIPNAME} unexpectedly remains"
 
 echo "1.2.3. Asynchronous creation with deferred probe"
 sim_disable_chip  chip0
@@ -382,7 +382,7 @@ test "$(agg_get_chip_num_lines _sysfs.0)" = "1" || fail "number of lines is not
 test "$(agg_get_line_name _sysfs.0 0)" = "" || fail "line name unexpectedly set"
 echo "$(agg_configfs_dev_name _sysfs.0)" > "$SYSFS_AGG_DIR/delete_device"
 test -d $CONFIGFS_AGG_DIR/_sysfs.0 && fail "_sysfs.0 unexpectedly remains"
-test -d /dev/${CHIPNAME} && fail "/dev/${CHIPNAME} unexpectedly remains"
+test -c /dev/${CHIPNAME} && fail "/dev/${CHIPNAME} unexpectedly remains"
 
 echo "1.2.4. Can't instantiate a chip with invalid configuration"
 echo "xyz 0" > "$SYSFS_AGG_DIR/new_device"
-- 
2.43.0