linux-kernel - [PATCH 3/4] serial: stm32: change register's offset type from u8 to u16

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Date: Thu, 11 Jan 2024 16:27:11 +0100
From: Valentin Caron <valentin.caron@...s.st.com>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jiri Slaby
	<jirislaby@...nel.org>
CC: Alexandre Torgue <alexandre.torgue@...s.st.com>,
        <linux-kernel@...r.kernel.org>, <linux-serial@...r.kernel.org>,
        <linux-stm32@...md-mailman.stormreply.com>,
        <linux-arm-kernel@...ts.infradead.org>,
        Valentin Caron
	<valentin.caron@...s.st.com>
Subject: [PATCH 3/4] serial: stm32: change register's offset type from u8 to u16

USART has registers above 0xff offset, so extend variable type to u16.
And change UNDEF_REG to 0xffff.

Signed-off-by: Valentin Caron <valentin.caron@...s.st.com>
---
 drivers/tty/serial/stm32-usart.h | 26 +++++++++++++-------------
 1 file changed, 13 insertions(+), 13 deletions(-)

diff --git a/drivers/tty/serial/stm32-usart.h b/drivers/tty/serial/stm32-usart.h
index 5ce1d3aae07e..bf3720948704 100644
--- a/drivers/tty/serial/stm32-usart.h
+++ b/drivers/tty/serial/stm32-usart.h
@@ -9,18 +9,18 @@
 #define DRIVER_NAME "stm32-usart"
 
 struct stm32_usart_offsets {
-	u8 cr1;
-	u8 cr2;
-	u8 cr3;
-	u8 brr;
-	u8 gtpr;
-	u8 rtor;
-	u8 rqr;
-	u8 isr;
-	u8 icr;
-	u8 rdr;
-	u8 tdr;
-	u8 presc;
+	u16 cr1;
+	u16 cr2;
+	u16 cr3;
+	u16 brr;
+	u16 gtpr;
+	u16 rtor;
+	u16 rqr;
+	u16 isr;
+	u16 icr;
+	u16 rdr;
+	u16 tdr;
+	u16 presc;
 };
 
 struct stm32_usart_config {
@@ -37,7 +37,7 @@ struct stm32_usart_info {
 	struct stm32_usart_config cfg;
 };
 
-#define UNDEF_REG 0xff
+#define UNDEF_REG 0xffff
 
 /* USART_SR (F4) / USART_ISR (F7) */
 #define USART_SR_PE		BIT(0)
-- 
2.25.1