diff options
| author | Wolfram Sang <wsa+renesas@sang-engineering.com> | 2026-04-17 10:42:34 +0300 |
|---|---|---|
| committer | Jassi Brar <jassisinghbrar@gmail.com> | 2026-04-18 21:10:14 +0300 |
| commit | 88ebadbf0deefdaccdab868b44ff70a0a257f473 (patch) | |
| tree | 0c57a0cb14c602df35695bc9878916de3e8da691 | |
| parent | dd9aa1f269000d679f4ec12b32abacfc8d921413 (diff) | |
| download | linux-88ebadbf0deefdaccdab868b44ff70a0a257f473.tar.xz | |
mailbox: mailbox-test: don't free the reused channel
The RX channel can be aliased to the TX channel if it has a different
MMIO. This special case needs to be handled when freeing the channels
otherwise a double-free occurs.
Fixes: 8ea4484d0c2b ("mailbox: Add generic mechanism for testing Mailbox Controllers")
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Jassi Brar <jassisinghbrar@gmail.com>
| -rw-r--r-- | drivers/mailbox/mailbox-test.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/mailbox/mailbox-test.c b/drivers/mailbox/mailbox-test.c index daf4b6f27d11..0a56b593fcac 100644 --- a/drivers/mailbox/mailbox-test.c +++ b/drivers/mailbox/mailbox-test.c @@ -427,7 +427,7 @@ static int mbox_test_probe(struct platform_device *pdev) err_free_chans: if (tdev->tx_channel) mbox_free_channel(tdev->tx_channel); - if (tdev->rx_channel) + if (tdev->rx_channel && tdev->rx_channel != tdev->tx_channel) mbox_free_channel(tdev->rx_channel); return ret; } @@ -440,7 +440,7 @@ static void mbox_test_remove(struct platform_device *pdev) if (tdev->tx_channel) mbox_free_channel(tdev->tx_channel); - if (tdev->rx_channel) + if (tdev->rx_channel && tdev->rx_channel != tdev->tx_channel) mbox_free_channel(tdev->rx_channel); } |