[PATCH 1/2] bus/platform: fix resource names iteration

[PATCH 1/2] bus/platform: fix resource names iteration

[Tomasz Duszynski]

Fix stop condition and make sure we have some
sentinel at the end of buffer to make sure
loop can properly terminate.

Coverity issue: 383661
Fixes: 17c839f74da3 ("bus: add platform bus")

Signed-off-by: Tomasz Duszynski <tduszynski@marvell.com>
---
 drivers/bus/platform/platform.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/bus/platform/platform.c b/drivers/bus/platform/platform.c
index 536d9524c6..a2faacdf18 100644
--- a/drivers/bus/platform/platform.c
+++ b/drivers/bus/platform/platform.c
@@ -249,11 +249,11 @@ of_resource_name(const char *dev_name, int index)
 	char *name;
 
 	snprintf(path, sizeof(path), PLATFORM_BUS_DEVICES_PATH "/%s/of_node/reg-names", dev_name);
-	ret = read_sysfs_string(path, buf, sizeof(buf));
+	ret = read_sysfs_string(path, buf, sizeof(buf) - 1);
 	if (ret)
 		return NULL;
 
-	for (name = buf; name; name += strlen(name) + 1) {
+	for (name = buf; *name != 0; name += strlen(name) + 1) {
 		if (num++ != index)
 			continue;
 		return strdup(name);
-- 
2.34.1

[PATCH 2/2] bus/platform: do not allow adding existing device

[Tomasz Duszynski]

Do not allow adding the same device multiple times.

Coverity issue: 383663
Fixes: 17c839f74da3 ("bus: add platform bus")

Signed-off-by: Tomasz Duszynski <tduszynski@marvell.com>
---
 drivers/bus/platform/platform.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/bus/platform/platform.c b/drivers/bus/platform/platform.c
index a2faacdf18..d4b53f6fbc 100644
--- a/drivers/bus/platform/platform.c
+++ b/drivers/bus/platform/platform.c
@@ -103,6 +103,7 @@ dev_add(const char *dev_name)
 				rte_devargs_remove(pdev->device.devargs);
 
 			free(pdev);
+			return -EEXIST;
 		}
 	}
 
-- 
2.34.1

Re: [PATCH 2/2] bus/platform: do not allow adding existing device

[Thomas Monjalon]

16/03/2023 10:41, Tomasz Duszynski:
> Do not allow adding the same device multiple times.
> 
> Coverity issue: 383663
> Fixes: 17c839f74da3 ("bus: add platform bus")
> 
> Signed-off-by: Tomasz Duszynski <tduszynski@marvell.com>

Series applied, thanks.