Because of Frame error, Parity error and Overrun error are occured only receive
operation, need to masking when error checking.
Signed-off-by: Minkyu Kang <mk7.k...@samsung.com>
---
drivers/serial/serial_s5pc1xx.c | 24 +++++++++++++++++-------
1 files changed, 17 insertions(+), 7 deletions(-)
diff --git a/drivers/serial/serial_s5pc1xx.c b/drivers/serial/serial_s5pc1xx.c
index 68c06a9..e06234d 100644
--- a/drivers/serial/serial_s5pc1xx.c
+++ b/drivers/serial/serial_s5pc1xx.c
@@ -98,14 +98,24 @@ int serial_init_dev(const int dev_index)
return 0;
}
-static int serial_err_check(const int dev_index)
+static int serial_err_check(const int dev_index, int op)
{
struct s5pc1xx_uart *const uart = s5pc1xx_get_base_uart(dev_index);
+ unsigned int mask;
+
+ /*
+ * UERSTAT
+ * Break Detect [3]
+ * Frame Err [2] : receive operation
+ * Parity Err [1] : receive operation
+ * Overrun Err [0] : receive operation
+ */
+ if (op)
+ mask = 0x8;
+ else
+ mask = 0xf;
- if (readl(&uart->uerstat) & 0xf)
- return 1;
-
- return 0;
+ return readl(&uart->uerstat) & mask;
}
/*
@@ -119,7 +129,7 @@ int serial_getc_dev(const int dev_index)
/* wait for character to arrive */
while (!(readl(&uart->utrstat) & 0x1)) {
- if (serial_err_check(dev_index))
+ if (serial_err_check(dev_index, 0))
return 0;
}
@@ -135,7 +145,7 @@ void serial_putc_dev(const char c, const int dev_index)
/* wait for room in the tx FIFO */
while (!(readl(&uart->utrstat) & 0x2)) {
- if (serial_err_check(dev_index))
+ if (serial_err_check(dev_index, 1))
return;
}
--
1.5.4.3
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