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tty: Use of_node_name_{eq,prefix} for node name comparisons 

Convert string compares of DT node names to use of_node_name_eq helper
instead. This removes direct access to the node name pointer.

For hvc, the code can also be simplified by using of_stdout pointer
instead of searching again for the stdout node.

Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Jiri Slaby <jslaby@suse.com>
Cc: linuxppc-dev@lists.ozlabs.org
Cc: linux-serial@vger.kernel.org
Cc: sparclinux@vger.kernel.org
Signed-off-by: Rob Herring <robh@kernel.org>
Acked-by: Michael Ellerman <mpe@ellerman.id.au>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Rob Herring 2018-12-05 13:50:43 -06:00 committed by Greg Kroah-Hartman
parent d72402145a
commit 778ec49c14
5 changed files with 10 additions and 19 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/tty/hvc/hvc_opal.c
View File

@ -353,7 +353,7 @@ void __init hvc_opal_init_early(void)
if (!opal)
return;
for_each_child_of_node(opal, np) {
if (!strcmp(np->name, "serial")) {
if (of_node_name_eq(np, "serial")) {
stdout_node = np;
break;
}

11
drivers/tty/hvc/hvc_vio.c
View File

@ -371,20 +371,11 @@ device_initcall(hvc_vio_init); /* after drivers/tty/hvc/hvc_console.c */
void __init hvc_vio_init_early(void)
{
const __be32 *termno;
const char *name;
const struct hv_ops *ops;
/* find the boot console from /chosen/stdout */
if (!of_stdout)
return;
name = of_get_property(of_stdout, "name", NULL);
if (!name) {
printk(KERN_WARNING "stdout node missing 'name' property!\n");
return;
}
/* Check if it's a virtual terminal */
if (strncmp(name, "vty", 3) != 0)
if (!of_node_name_prefix(of_stdout, "vty"))
return;
termno = of_get_property(of_stdout, "reg", NULL);
if (termno == NULL)

4
drivers/tty/serial/pmac_zilog.c
View File

@ -1648,9 +1648,9 @@ static int __init pmz_probe(void)
*/
node_a = node_b = NULL;
for (np = NULL; (np = of_get_next_child(node_p, np)) != NULL;) {
if (strncmp(np->name, "ch-a", 4) == 0)
if (of_node_name_prefix(np, "ch-a"))
node_a = of_node_get(np);
else if (strncmp(np->name, "ch-b", 4) == 0)
else if (of_node_name_prefix(np, "ch-b"))
node_b = of_node_get(np);
}
if (!node_a && !node_b) {

8
drivers/tty/serial/suncore.c
View File

@ -89,14 +89,14 @@ void sunserial_console_termios(struct console *con, struct device_node *uart_dp)
int baud, bits, stop, cflag;
char parity;
if (!strcmp(uart_dp->name, "rsc") ||
!strcmp(uart_dp->name, "rsc-console") ||
!strcmp(uart_dp->name, "rsc-control")) {
if (of_node_name_eq(uart_dp, "rsc") ||
of_node_name_eq(uart_dp, "rsc-console") ||
of_node_name_eq(uart_dp, "rsc-control")) {
mode = of_get_property(uart_dp,
"ssp-console-modes", NULL);
if (!mode)
mode = "115200,8,n,1,-";
} else if (!strcmp(uart_dp->name, "lom-console")) {
} else if (of_node_name_eq(uart_dp, "lom-console")) {
mode = "9600,8,n,1,-";
} else {
struct device_node *dp;

4
drivers/tty/serial/sunsu.c
View File

@ -1482,8 +1482,8 @@ static int su_probe(struct platform_device *op)
up->port.ops = &sunsu_pops;
ignore_line = false;
if (!strcmp(dp->name, "rsc-console") ||
!strcmp(dp->name, "lom-console"))
if (of_node_name_eq(dp, "rsc-console") ||
of_node_name_eq(dp, "lom-console"))
ignore_line = true;
sunserial_console_match(SUNSU_CONSOLE(), dp,