[PATCH v2 3/3] serial: 8250: Switch UART port flags to using BIT_ULL

From: Maciej W. Rozycki
Date: Tue Sep 20 2022 - 19:41:30 EST


Use BIT_ULL rather than encoding bits explicitly where applicable with
UART port flags. This makes a (__force upf_t) cast redundant, but keep
it for visual consistency with the flags defined in terms of userspace
macros.

Signed-off-by: Maciej W. Rozycki <macro@xxxxxxxxxxx>
---
New change in v2.
---
include/linux/serial_core.h | 28 ++++++++++++++--------------
1 file changed, 14 insertions(+), 14 deletions(-)

linux-serial-8250-upf-bit-ull.diff
Index: linux-macro/include/linux/serial_core.h
===================================================================
--- linux-macro.orig/include/linux/serial_core.h
+++ linux-macro/include/linux/serial_core.h
@@ -505,24 +505,24 @@ struct uart_port {
#define UPF_BUGGY_UART ((__force upf_t) ASYNC_BUGGY_UART /* 14 */ )
#define UPF_MAGIC_MULTIPLIER ((__force upf_t) ASYNC_MAGIC_MULTIPLIER /* 16 */ )

-#define UPF_NO_THRE_TEST ((__force upf_t) (1 << 19))
+#define UPF_NO_THRE_TEST ((__force upf_t) BIT_ULL(19))
/* Port has hardware-assisted h/w flow control */
-#define UPF_AUTO_CTS ((__force upf_t) (1 << 20))
-#define UPF_AUTO_RTS ((__force upf_t) (1 << 21))
+#define UPF_AUTO_CTS ((__force upf_t) BIT_ULL(20))
+#define UPF_AUTO_RTS ((__force upf_t) BIT_ULL(21))
#define UPF_HARD_FLOW ((__force upf_t) (UPF_AUTO_CTS | UPF_AUTO_RTS))
/* Port has hardware-assisted s/w flow control */
-#define UPF_SOFT_FLOW ((__force upf_t) (1 << 22))
-#define UPF_CONS_FLOW ((__force upf_t) (1 << 23))
-#define UPF_SHARE_IRQ ((__force upf_t) (1 << 24))
-#define UPF_EXAR_EFR ((__force upf_t) (1 << 25))
-#define UPF_BUG_THRE ((__force upf_t) (1 << 26))
+#define UPF_SOFT_FLOW ((__force upf_t) BIT_ULL(22))
+#define UPF_CONS_FLOW ((__force upf_t) BIT_ULL(23))
+#define UPF_SHARE_IRQ ((__force upf_t) BIT_ULL(24))
+#define UPF_EXAR_EFR ((__force upf_t) BIT_ULL(25))
+#define UPF_BUG_THRE ((__force upf_t) BIT_ULL(26))
/* The exact UART type is known and should not be probed. */
-#define UPF_FIXED_TYPE ((__force upf_t) (1 << 27))
-#define UPF_BOOT_AUTOCONF ((__force upf_t) (1 << 28))
-#define UPF_FIXED_PORT ((__force upf_t) (1 << 29))
-#define UPF_DEAD ((__force upf_t) (1 << 30))
-#define UPF_IOREMAP ((__force upf_t) (1 << 31))
-#define UPF_FULL_PROBE ((__force upf_t) (1ULL << 32))
+#define UPF_FIXED_TYPE ((__force upf_t) BIT_ULL(27))
+#define UPF_BOOT_AUTOCONF ((__force upf_t) BIT_ULL(28))
+#define UPF_FIXED_PORT ((__force upf_t) BIT_ULL(29))
+#define UPF_DEAD ((__force upf_t) BIT_ULL(30))
+#define UPF_IOREMAP ((__force upf_t) BIT_ULL(31))
+#define UPF_FULL_PROBE ((__force upf_t) BIT_ULL(32))

#define __UPF_CHANGE_MASK 0x17fff
#define UPF_CHANGE_MASK ((__force upf_t) __UPF_CHANGE_MASK)