github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-05-29 17:43:52 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

mailbox: mailbox-test: don't free the reused channel

Browse Source 
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: 8ea4484d0c ("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>
This commit is contained in:
Wolfram Sang 2026-04-17 09:42:34 +02:00 committed by Jassi Brar
parent dd9aa1f269
commit 88ebadbf0d
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/mailbox/mailbox-test.c
View File

@ -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);
}