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Diffstat (limited to 'arch/um/drivers/net_user.c')
-rw-r--r--arch/um/drivers/net_user.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/um/drivers/net_user.c b/arch/um/drivers/net_user.c
index 0e2f06187ea..0a7786e00cf 100644
--- a/arch/um/drivers/net_user.c
+++ b/arch/um/drivers/net_user.c
@@ -182,7 +182,9 @@ static int change_tramp(char **argv, char *output, int output_len)
pe_data.stdout = fds[1];
pid = run_helper(change_pre_exec, &pe_data, argv, NULL);
- read_output(fds[0], output, output_len);
+ if (pid > 0) /* Avoid hang as we won't get data in failure case. */
+ read_output(fds[0], output, output_len);
+
os_close_file(fds[0]);
os_close_file(fds[1]);