[xen master] ns16550: specify uart param for ns_{read,write}_reg as const

[patchbot@xxxxxxx]

commit 3e1dea307b9bd03807f86e2265908039b2f9accf
Author:     Marek Marczykowski-Górecki <marmarek@xxxxxxxxxxxxxxxxxxxxxx>
AuthorDate: Fri Aug 20 12:29:05 2021 +0200
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Fri Aug 20 12:29:05 2021 +0200

    ns16550: specify uart param for ns_{read,write}_reg as const
    
    They don't modify it, after all.
    
    Signed-off-by: Marek Marczykowski-Górecki <marmarek@xxxxxxxxxxxxxxxxxxxxxx>
    Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>
---
 xen/drivers/char/ns16550.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/xen/drivers/char/ns16550.c b/xen/drivers/char/ns16550.c
index 97b85b0225..20da8fd3b4 100644
--- a/xen/drivers/char/ns16550.c
+++ b/xen/drivers/char/ns16550.c
@@ -108,7 +108,7 @@ struct ns16550_config_param {
 
 static void ns16550_delayed_resume(void *data);
 
-static u8 ns_read_reg(struct ns16550 *uart, unsigned int reg)
+static u8 ns_read_reg(const struct ns16550 *uart, unsigned int reg)
 {
     void __iomem *addr = uart->remapped_io_base + (reg << uart->reg_shift);
 #ifdef CONFIG_HAS_IOPORTS
@@ -126,7 +126,7 @@ static u8 ns_read_reg(struct ns16550 *uart, unsigned int 
reg)
     }
 }
 
-static void ns_write_reg(struct ns16550 *uart, unsigned int reg, u8 c)
+static void ns_write_reg(const struct ns16550 *uart, unsigned int reg, u8 c)
 {
     void __iomem *addr = uart->remapped_io_base + (reg << uart->reg_shift);
 #ifdef CONFIG_HAS_IOPORTS
--
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