If an error occurs after a successful ida_alloc() call, it should be undone
by a corresponding ida_free(), as already done in the remove function.

Add the missing call in the error handling path of cb710_probe().

Fixes: 5f5bac8272be ("mmc: Driver for CB710/720 memory card reader (MMC part)")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
---
 drivers/misc/cb710/core.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/misc/cb710/core.c b/drivers/misc/cb710/core.c
index 55b7ee0e8f93..394fc2488029 100644
--- a/drivers/misc/cb710/core.c
+++ b/drivers/misc/cb710/core.c
@@ -250,7 +250,7 @@ static int cb710_probe(struct pci_dev *pdev,
 		err = cb710_register_slot(chip,
 			CB710_SLOT_MMC, 0x00, "cb710-mmc");
 		if (err)
-			return err;
+			goto free_platform_id;
 	}
 
 	if (val & CB710_SLOT_MS) {	/* MemoryStick slot */
@@ -276,6 +276,10 @@ static int cb710_probe(struct pci_dev *pdev,
 #ifdef CONFIG_CB710_DEBUG_ASSUMPTIONS
 	BUG_ON(atomic_read(&chip->slot_refs_count) != 0);
 #endif
+
+free_platform_id:
+	ida_free(&cb710_ida, chip->platform_id);
+
 	return err;
 }
 
-- 
2.48.1

On Sun, Mar 09, 2025 at 09:22:05AM +0100, Christophe JAILLET wrote:
> If an error occurs after a successful ida_alloc() call, it should be undone
> by a corresponding ida_free(), as already done in the remove function.
> 
> Add the missing call in the error handling path of cb710_probe().
> 
> Fixes: 5f5bac8272be ("mmc: Driver for CB710/720 memory card reader (MMC part)")
> Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
> ---
>  drivers/misc/cb710/core.c | 6 +++++-
>  1 file changed, 5 insertions(+), 1 deletion(-)

Acked-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>