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um: ubd: Add missing error check in start_io_thread()

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The subsequent call to os_set_fd_block() overwrites the previous
return value. OR the two return values together to fix it.

Fixes: f88f0bdfc3 ("um: UBD Improvements")
Signed-off-by: Tiwei Bie <tiwei.btw@antgroup.com>
Link: https://patch.msgid.link/20250606124428.148164-2-tiwei.btw@antgroup.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Tiwei Bie
2025-06-06 20:44:25 +08:00
committed by Johannes Berg
parent 86731a2a65
commit c55c7a85e0
1 changed files with 1 additions and 1 deletions
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2
arch/um/drivers/ubd_user.c
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@@ -41,7 +41,7 @@ int start_io_thread(struct os_helper_thread **td_out, int *fd_out)
*fd_out = fds[1];
err = os_set_fd_block(*fd_out, 0);
err = os_set_fd_block(kernel_fd, 0);
err |= os_set_fd_block(kernel_fd, 0);
if (err) {
printk("start_io_thread - failed to set nonblocking I/O.\n");
goto out_close;