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| author | Matthew Leach | 2016-06-22 18:57:03 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman | 2016-06-25 23:04:12 +0200 |
| commit | bbb5ff91225dfbf3e5c27619552e41661048ed61 (patch) | |
| tree | a675a32e89dca885304a9b34c581290f59515289 /drivers/tty/serial/samsung.c | |
| parent | tty: serial: samsung: fixup accessors for endian (diff) | |
| download | kernel-qcow2-linux-bbb5ff91225dfbf3e5c27619552e41661048ed61.tar.gz kernel-qcow2-linux-bbb5ff91225dfbf3e5c27619552e41661048ed61.tar.xz kernel-qcow2-linux-bbb5ff91225dfbf3e5c27619552e41661048ed61.zip | |
tty: serial: samsung: add byte-order aware bit functions
This driver makes use of the __set_bit() and __clear_bit() functions.
When running under big-endian, these functions don't convert the bit
indexes when working with peripheral registers, leading to the
incorrect bits being set and cleared when running big-endian.
Add two new driver functions for setting and clearing bits that are
byte-order aware.
Signed-off-by: Matthew Leach <matthew@mattleach.net>
Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/serial/samsung.c')
| -rw-r--r-- | drivers/tty/serial/samsung.c | 16 |
1 files changed, 7 insertions, 9 deletions
diff --git a/drivers/tty/serial/samsung.c b/drivers/tty/serial/samsung.c index 4d2924f61e0b..ae2095a66708 100644 --- a/drivers/tty/serial/samsung.c +++ b/drivers/tty/serial/samsung.c @@ -169,8 +169,7 @@ static void s3c24xx_serial_stop_tx(struct uart_port *port) return; if (s3c24xx_serial_has_interrupt_mask(port)) - __set_bit(S3C64XX_UINTM_TXD, - portaddrl(port, S3C64XX_UINTM)); + s3c24xx_set_bit(port, S3C64XX_UINTM_TXD, S3C64XX_UINTM); else disable_irq_nosync(ourport->tx_irq); @@ -235,8 +234,7 @@ static void enable_tx_dma(struct s3c24xx_uart_port *ourport) /* Mask Tx interrupt */ if (s3c24xx_serial_has_interrupt_mask(port)) - __set_bit(S3C64XX_UINTM_TXD, - portaddrl(port, S3C64XX_UINTM)); + s3c24xx_set_bit(port, S3C64XX_UINTM_TXD, S3C64XX_UINTM); else disable_irq_nosync(ourport->tx_irq); @@ -269,8 +267,8 @@ static void enable_tx_pio(struct s3c24xx_uart_port *ourport) /* Unmask Tx interrupt */ if (s3c24xx_serial_has_interrupt_mask(port)) - __clear_bit(S3C64XX_UINTM_TXD, - portaddrl(port, S3C64XX_UINTM)); + s3c24xx_clear_bit(port, S3C64XX_UINTM_TXD, + S3C64XX_UINTM); else enable_irq(ourport->tx_irq); @@ -397,8 +395,8 @@ static void s3c24xx_serial_stop_rx(struct uart_port *port) if (rx_enabled(port)) { dbg("s3c24xx_serial_stop_rx: port=%p\n", port); if (s3c24xx_serial_has_interrupt_mask(port)) - __set_bit(S3C64XX_UINTM_RXD, - portaddrl(port, S3C64XX_UINTM)); + s3c24xx_set_bit(port, S3C64XX_UINTM_RXD, + S3C64XX_UINTM); else disable_irq_nosync(ourport->rx_irq); rx_enabled(port) = 0; @@ -1069,7 +1067,7 @@ static int s3c64xx_serial_startup(struct uart_port *port) spin_unlock_irqrestore(&port->lock, flags); /* Enable Rx Interrupt */ - __clear_bit(S3C64XX_UINTM_RXD, portaddrl(port, S3C64XX_UINTM)); + s3c24xx_clear_bit(port, S3C64XX_UINTM_RXD, S3C64XX_UINTM); dbg("s3c64xx_serial_startup ok\n"); return ret; |