diff mbox series

[v2,1/3] drivers: serial: earlycon: Correct argument name

Message ID 20220806163255.10404-2-markuss.broks@gmail.com
State New
Headers show
Series Add generic framebuffer support to EFI earlycon driver | expand

Commit Message

Markuss Broks Aug. 6, 2022, 4:32 p.m. UTC 
The "node" argument is actually an offset, and it's also
an "int", and not "unsigned long". Correct the of_setup_earlycon
function.

Signed-off-by: Markuss Broks <markuss.broks@gmail.com>
---
 drivers/tty/serial/earlycon.c | 18 +++++++++---------
 1 file changed, 9 insertions(+), 9 deletions(-)

Comments

Andy Shevchenko Aug. 6, 2022, 4:56 p.m. UTC | #1 
On Sat, Aug 6, 2022 at 6:37 PM Markuss Broks <markuss.broks@gmail.com> wrote:
>
> The "node" argument is actually an offset, and it's also
> an "int", and not "unsigned long". Correct the of_setup_earlycon
> function.

Suggested-by: Greg KH?

> Signed-off-by: Markuss Broks <markuss.broks@gmail.com>
Rob Herring (Arm) Aug. 8, 2022, 3:55 p.m. UTC | #2 
On Sat, Aug 6, 2022 at 10:34 AM Markuss Broks <markuss.broks@gmail.com> wrote:
>
> The "node" argument is actually an offset,

It's an offset to a node in the FDT. The fact that it is an offset is
an internal implementation detail of the FDT format. So really, it's a
handle to a node. 'node' is more descriptive to its purpose.

> and it's also an "int", and not "unsigned long".

Uh, no it's not. of_flat_dt_*() functions all take an unsigned long.

Rob
diff mbox series

Patch

diff --git a/drivers/tty/serial/earlycon.c b/drivers/tty/serial/earlycon.c
index 57c70851f22a0e78805f34d1a7700708104b6f6a..bc210ae8173d97d5ef422468acf2755a853cb943 100644
--- a/drivers/tty/serial/earlycon.c
+++ b/drivers/tty/serial/earlycon.c
@@ -244,7 +244,7 @@  early_param("earlycon", param_setup_earlycon);
 #ifdef CONFIG_OF_EARLY_FLATTREE
 
 int __init of_setup_earlycon(const struct earlycon_id *match,
-			     unsigned long node,
+			     int offset,
 			     const char *options)
 {
 	int err;
@@ -255,25 +255,25 @@  int __init of_setup_earlycon(const struct earlycon_id *match,
 
 	spin_lock_init(&port->lock);
 	port->iotype = UPIO_MEM;
-	addr = of_flat_dt_translate_address(node);
+	addr = of_flat_dt_translate_address(offset);
 	if (addr == OF_BAD_ADDR) {
 		pr_warn("[%s] bad address\n", match->name);
 		return -ENXIO;
 	}
 	port->mapbase = addr;
 
-	val = of_get_flat_dt_prop(node, "reg-offset", NULL);
+	val = of_get_flat_dt_prop(offset, "reg-offset", NULL);
 	if (val)
 		port->mapbase += be32_to_cpu(*val);
 	port->membase = earlycon_map(port->mapbase, SZ_4K);
 
-	val = of_get_flat_dt_prop(node, "reg-shift", NULL);
+	val = of_get_flat_dt_prop(offset, "reg-shift", NULL);
 	if (val)
 		port->regshift = be32_to_cpu(*val);
-	big_endian = of_get_flat_dt_prop(node, "big-endian", NULL) != NULL ||
+	big_endian = of_get_flat_dt_prop(offset, "big-endian", NULL) != NULL ||
 		(IS_ENABLED(CONFIG_CPU_BIG_ENDIAN) &&
-		 of_get_flat_dt_prop(node, "native-endian", NULL) != NULL);
-	val = of_get_flat_dt_prop(node, "reg-io-width", NULL);
+		 of_get_flat_dt_prop(offset, "native-endian", NULL) != NULL);
+	val = of_get_flat_dt_prop(offset, "reg-io-width", NULL);
 	if (val) {
 		switch (be32_to_cpu(*val)) {
 		case 1:
@@ -291,11 +291,11 @@  int __init of_setup_earlycon(const struct earlycon_id *match,
 		}
 	}
 
-	val = of_get_flat_dt_prop(node, "current-speed", NULL);
+	val = of_get_flat_dt_prop(offset, "current-speed", NULL);
 	if (val)
 		early_console_dev.baud = be32_to_cpu(*val);
 
-	val = of_get_flat_dt_prop(node, "clock-frequency", NULL);
+	val = of_get_flat_dt_prop(offset, "clock-frequency", NULL);
 	if (val)
 		port->uartclk = be32_to_cpu(*val);