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authorRussell King <rmk@dyn-67.arm.linux.org.uk>2006-01-21 23:03:28 (GMT)
committerRussell King <rmk+kernel@arm.linux.org.uk>2006-01-21 23:03:28 (GMT)
commit0077d45e46fe2af3aaee5813c99268afcd0e7c0e (patch)
tree3de13b52930e350f93523fb3c84c0b8fb4a7e7fb /include
parent27ae7a7435634820e7f7e2b922d8119f79cfc6e4 (diff)
downloadlinux-0077d45e46fe2af3aaee5813c99268afcd0e7c0e.tar.xz
[SERIAL] Make uart_port flags a bitwise type
Same reasoning as commit 747c8a55946ed037bf7d62454c3c599c02af2262 but this time we're making uart_port flags a bitwise type - not all of these flags correspond with the old ASYNC_ flags, so there is the possibility for bugs if the wrong ASYNC_* constants are used. Always use UPF_* constants for uart_port->flags. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'include')
-rw-r--r--include/linux/serial_8250.h2
-rw-r--r--include/linux/serial_core.h48
2 files changed, 26 insertions, 24 deletions
diff --git a/include/linux/serial_8250.h b/include/linux/serial_8250.h
index cee302a..73b464f 100644
--- a/include/linux/serial_8250.h
+++ b/include/linux/serial_8250.h
@@ -26,7 +26,7 @@ struct plat_serial8250_port {
unsigned char regshift; /* register shift */
unsigned char iotype; /* UPIO_* */
unsigned char hub6;
- unsigned int flags; /* UPF_* flags */
+ upf_t flags; /* UPF_* flags */
};
/*
diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h
index 1a8cd01..4041122 100644
--- a/include/linux/serial_core.h
+++ b/include/linux/serial_core.h
@@ -203,6 +203,8 @@ struct uart_icount {
__u32 buf_overrun;
};
+typedef unsigned int __bitwise__ upf_t;
+
struct uart_port {
spinlock_t lock; /* port lock */
unsigned int iobase; /* in/out[bwl] */
@@ -230,29 +232,29 @@ struct uart_port {
unsigned long sysrq; /* sysrq timeout */
#endif
- unsigned int flags;
-
-#define UPF_FOURPORT (1 << 1)
-#define UPF_SAK (1 << 2)
-#define UPF_SPD_MASK (0x1030)
-#define UPF_SPD_HI (0x0010)
-#define UPF_SPD_VHI (0x0020)
-#define UPF_SPD_CUST (0x0030)
-#define UPF_SPD_SHI (0x1000)
-#define UPF_SPD_WARP (0x1010)
-#define UPF_SKIP_TEST (1 << 6)
-#define UPF_AUTO_IRQ (1 << 7)
-#define UPF_HARDPPS_CD (1 << 11)
-#define UPF_LOW_LATENCY (1 << 13)
-#define UPF_BUGGY_UART (1 << 14)
-#define UPF_MAGIC_MULTIPLIER (1 << 16)
-#define UPF_CONS_FLOW (1 << 23)
-#define UPF_SHARE_IRQ (1 << 24)
-#define UPF_BOOT_AUTOCONF (1 << 28)
-#define UPF_IOREMAP (1 << 31)
-
-#define UPF_CHANGE_MASK (0x17fff)
-#define UPF_USR_MASK (UPF_SPD_MASK|UPF_LOW_LATENCY)
+ upf_t flags;
+
+#define UPF_FOURPORT ((__force upf_t) (1 << 1))
+#define UPF_SAK ((__force upf_t) (1 << 2))
+#define UPF_SPD_MASK ((__force upf_t) (0x1030))
+#define UPF_SPD_HI ((__force upf_t) (0x0010))
+#define UPF_SPD_VHI ((__force upf_t) (0x0020))
+#define UPF_SPD_CUST ((__force upf_t) (0x0030))
+#define UPF_SPD_SHI ((__force upf_t) (0x1000))
+#define UPF_SPD_WARP ((__force upf_t) (0x1010))
+#define UPF_SKIP_TEST ((__force upf_t) (1 << 6))
+#define UPF_AUTO_IRQ ((__force upf_t) (1 << 7))
+#define UPF_HARDPPS_CD ((__force upf_t) (1 << 11))
+#define UPF_LOW_LATENCY ((__force upf_t) (1 << 13))
+#define UPF_BUGGY_UART ((__force upf_t) (1 << 14))
+#define UPF_MAGIC_MULTIPLIER ((__force upf_t) (1 << 16))
+#define UPF_CONS_FLOW ((__force upf_t) (1 << 23))
+#define UPF_SHARE_IRQ ((__force upf_t) (1 << 24))
+#define UPF_BOOT_AUTOCONF ((__force upf_t) (1 << 28))
+#define UPF_IOREMAP ((__force upf_t) (1 << 31))
+
+#define UPF_CHANGE_MASK ((__force upf_t) (0x17fff))
+#define UPF_USR_MASK ((__force upf_t) (UPF_SPD_MASK|UPF_LOW_LATENCY))
unsigned int mctrl; /* current modem ctrl settings */
unsigned int timeout; /* character-based timeout */