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authorSamuel Iglesias Gonsalvez <siglesias@igalia.com>2012-12-10 11:50:02 +0100
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-01-15 18:24:38 -0800
commit9d01b6f064c130028be8beb729ada7c39021b582 (patch)
tree273e33d913ca1b1e159b62a7d94be4cb4c650cf6 /drivers/ipack
parentb5071f2cd89bfd88cc3c3a820cbb9e7d7d9b5c92 (diff)
downloadlinux-9d01b6f064c130028be8beb729ada7c39021b582.tar.gz
ipack/devices/ipoctal: rework disable TX when the TX buffer is empty
Depending of the device, it disables the TX mode in different places when there is no more data to transmit. This patch reorder them and disable the TX mode in the same place. Signed-off-by: Samuel Iglesias Gonsalvez <siglesias@igalia.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/ipack')
-rw-r--r--drivers/ipack/devices/ipoctal.c18
1 files changed, 7 insertions, 11 deletions
diff --git a/drivers/ipack/devices/ipoctal.c b/drivers/ipack/devices/ipoctal.c
index 850f10506a7..f2875f0f14d 100644
--- a/drivers/ipack/devices/ipoctal.c
+++ b/drivers/ipack/devices/ipoctal.c
@@ -177,10 +177,6 @@ static void ipoctal_irq_tx(struct ipoctal_channel *channel)
(*pointer_write)++;
*pointer_write = *pointer_write % PAGE_SIZE;
channel->nb_bytes--;
-
- if (channel->nb_bytes == 0 &&
- channel->board_id != IPACK1_DEVICE_ID_SBS_OCTAL_485)
- iowrite8(CR_DISABLE_TX, &channel->regs->w.cr);
}
static void ipoctal_irq_channel(struct ipoctal_channel *channel)
@@ -196,14 +192,14 @@ static void ipoctal_irq_channel(struct ipoctal_channel *channel)
isr = ioread8(&channel->block_regs->r.isr);
sr = ioread8(&channel->regs->r.sr);
- /* In case of RS-485, change from TX to RX when finishing TX.
- * Half-duplex. */
- if ((channel->board_id == IPACK1_DEVICE_ID_SBS_OCTAL_485) &&
- (sr & SR_TX_EMPTY) && (channel->nb_bytes == 0)) {
- iowrite8(CR_DISABLE_TX, &channel->regs->w.cr);
- iowrite8(CR_CMD_NEGATE_RTSN, &channel->regs->w.cr);
- iowrite8(CR_ENABLE_RX, &channel->regs->w.cr);
+ if ((sr & SR_TX_EMPTY) && (channel->nb_bytes == 0)) {
iowrite8(CR_DISABLE_TX, &channel->regs->w.cr);
+ /* In case of RS-485, change from TX to RX when finishing TX.
+ * Half-duplex. */
+ if (channel->board_id == IPACK1_DEVICE_ID_SBS_OCTAL_485) {
+ iowrite8(CR_CMD_NEGATE_RTSN, &channel->regs->w.cr);
+ iowrite8(CR_ENABLE_RX, &channel->regs->w.cr);
+ }
}
/* RX data */