[xen master] ns16550: remove unneeded truncation check in the DT init code

[patchbot@xxxxxxx]

commit e1528c54d3c44e50f0460f1ff721a876c81479b9
Author:     Ayan Kumar Halder <ayan.kumar.halder@xxxxxxx>
AuthorDate: Thu Feb 9 11:15:50 2023 +0100
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Thu Feb 9 11:15:50 2023 +0100

    ns16550: remove unneeded truncation check in the DT init code
    
    In an earlier commit (7c1de0038895), "ns16550.io_size" was u32 and
    "io_size" was u64. Thus, the ASSERT() was needed to check if the values
    are the same.
    However, in a later commit (c9f8e0aee507), "ns16550.io_size" was changed
    to u64. Thus, the ASSERT() became redundant.
    
    So, now as "io_size" and "uart->io_size" are both u64, there will be no
    truncation. Thus, one can remove the ASSERT() and extra assignment.
    
    Signed-off-by: Ayan Kumar Halder <ayan.kumar.halder@xxxxxxx>
    Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>
---
 xen/drivers/char/ns16550.c | 7 +------
 1 file changed, 1 insertion(+), 6 deletions(-)

diff --git a/xen/drivers/char/ns16550.c b/xen/drivers/char/ns16550.c
index 4ce74b3cd3..092f6b9c4b 100644
--- a/xen/drivers/char/ns16550.c
+++ b/xen/drivers/char/ns16550.c
@@ -1747,7 +1747,6 @@ static int __init ns16550_uart_dt_init(struct 
dt_device_node *dev,
     struct ns16550 *uart;
     int res;
     u32 reg_shift, reg_width;
-    u64 io_size;
 
     uart = &ns16550_com[0];
 
@@ -1758,14 +1757,10 @@ static int __init ns16550_uart_dt_init(struct 
dt_device_node *dev,
     uart->parity    = UART_PARITY_NONE;
     uart->stop_bits = 1;
 
-    res = dt_device_get_address(dev, 0, &uart->io_base, &io_size);
+    res = dt_device_get_address(dev, 0, &uart->io_base, &uart->io_size);
     if ( res )
         return res;
 
-    uart->io_size = io_size;
-
-    ASSERT(uart->io_size == io_size); /* Detect truncation */
-
     res = dt_property_read_u32(dev, "reg-shift", &reg_shift);
     if ( !res )
         uart->reg_shift = 0;
--
generated by git-patchbot for /home/xen/git/xen.git#master