6.10-stable review patch. If anyone has any objections, please let me know.
------------------
From: Takashi Iwai tiwai@suse.de
commit 9a4ab167cfb1dea1df0c0c948205a62c7eb3b85b upstream.
When a device tries to update the FB name string even if its Endpoint is declared as static, we should skip it, just already done for the FB info update reply.
Fixes: 37e0e14128e0 ("ALSA: ump: Support UMP Endpoint and Function Block parsing") Cc: stable@vger.kernel.org Link: https://patch.msgid.link/20240722135929.8612-1-tiwai@suse.de Signed-off-by: Takashi Iwai tiwai@suse.de Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- sound/core/ump.c | 7 +++++++ 1 file changed, 7 insertions(+)
--- a/sound/core/ump.c +++ b/sound/core/ump.c @@ -806,6 +806,13 @@ static int ump_handle_fb_name_msg(struct if (!fb) return -ENODEV;
+ if (ump->parsed && + (ump->info.flags & SNDRV_UMP_EP_INFO_STATIC_BLOCKS)) { + ump_dbg(ump, "Skipping static FB name update (blk#%d)\n", + fb->info.block_id); + return 0; + } + ret = ump_append_string(ump, fb->info.name, sizeof(fb->info.name), buf->raw, 3); /* notify the FB name update to sequencer, too */