From: timur@codeaurora•org (Timur Tabi)
To: linux-arm-kernel@lists•infradead.org
Subject: [PATCH 1/3] [v2] hvc_dcc: don't ignore errors during initialization
Date: Fri, 7 Aug 2015 19:16:33 -0500 [thread overview]
Message-ID: <1438992995-22610-1-git-send-email-timur@codeaurora.org> (raw)
hvc_instantiate() and hvc_alloc() return errors if they fail, so don't
ignore them.
Signed-off-by: Timur Tabi <timur@codeaurora•org>
---
drivers/tty/hvc/hvc_dcc.c | 17 +++++++++++++----
1 file changed, 13 insertions(+), 4 deletions(-)
diff --git a/drivers/tty/hvc/hvc_dcc.c b/drivers/tty/hvc/hvc_dcc.c
index 809920d..47654ea 100644
--- a/drivers/tty/hvc/hvc_dcc.c
+++ b/drivers/tty/hvc/hvc_dcc.c
@@ -70,20 +70,29 @@ static const struct hv_ops hvc_dcc_get_put_ops = {
static int __init hvc_dcc_console_init(void)
{
+ int ret;
+
+ /* This always runs on boot core */
if (!hvc_dcc_check())
return -ENODEV;
- hvc_instantiate(0, 0, &hvc_dcc_get_put_ops);
- return 0;
+ /* Returns -1 if error */
+ ret = hvc_instantiate(0, 0, &hvc_dcc_get_put_ops);
+
+ return ret < 0 ? -ENODEV : 0;
}
console_initcall(hvc_dcc_console_init);
static int __init hvc_dcc_init(void)
{
+ struct hvc_struct *p;
+
+ /* This can run on any core */
if (!hvc_dcc_check())
return -ENODEV;
- hvc_alloc(0, 0, &hvc_dcc_get_put_ops, 128);
- return 0;
+ p = hvc_alloc(0, 0, &hvc_dcc_get_put_ops, 128);
+
+ return PTR_ERR_OR_ZERO(p);
}
device_initcall(hvc_dcc_init);
--
Qualcomm Innovation Center, Inc.
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project.
next reply other threads:[~2015-08-08 0:16 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-08-08 0:16 Timur Tabi [this message]
2015-08-08 0:16 ` [PATCH 2/3] [v4] ARM64: TTY: hvc_dcc: Add support for ARM64 dcc Timur Tabi
2015-08-10 9:40 ` Will Deacon
2015-08-17 23:56 ` Timur Tabi
2015-08-18 8:21 ` Dave Martin
2015-08-18 19:07 ` Timur Tabi
2015-08-19 10:14 ` Dave Martin
2015-08-19 16:16 ` Timur Tabi
2015-08-19 16:37 ` Dave Martin
2015-08-24 23:51 ` sboyd at codeaurora.org
2015-09-02 11:10 ` Dave Martin
2015-08-08 0:16 ` [PATCH 3/3] [v2] hvc_dcc: disable user-space access to DCC Timur Tabi
2015-08-10 9:47 ` Will Deacon
2015-08-17 22:45 ` Timur Tabi
2015-08-10 9:48 ` [PATCH 1/3] [v2] hvc_dcc: don't ignore errors during initialization Will Deacon
2015-08-19 22:51 ` Timur Tabi
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