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net: ipa: introduce gsi_channel_initialized()

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Create a simple helper function that indicates whether a channel has
been initialized.  This abstacts/hides the details of how this is
determined.

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Alex Elder 2021-02-12 08:34:02 -06:00 committed by David S. Miller
parent a266ad6b5d
commit 6170b6dab2
1 changed files with 14 additions and 8 deletions
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22
drivers/net/ipa/gsi.c
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@ -175,6 +175,12 @@ static u32 gsi_channel_id(struct gsi_channel *channel)
return channel - &channel->gsi->channel[0];
}
/* An initialized channel has a non-null GSI pointer */
static bool gsi_channel_initialized(struct gsi_channel *channel)
{
return !!channel->gsi;
}
/* Update the GSI IRQ type register with the cached value */
static void gsi_irq_type_update(struct gsi *gsi, u32 val)
{
@ -1638,8 +1644,8 @@ static int gsi_channel_setup_one(struct gsi *gsi, u32 channel_id)
u32 evt_ring_id = channel->evt_ring_id;
int ret;
if (!channel->gsi)
return 0; /* Ignore uninitialized channels */
if (!gsi_channel_initialized(channel))
return 0;
ret = gsi_evt_ring_alloc_command(gsi, evt_ring_id);
if (ret)
@ -1675,8 +1681,8 @@ static void gsi_channel_teardown_one(struct gsi *gsi, u32 channel_id)
struct gsi_channel *channel = &gsi->channel[channel_id];
u32 evt_ring_id = channel->evt_ring_id;
if (!channel->gsi)
return; /* Ignore uninitialized channels */
if (!gsi_channel_initialized(channel))
return;
netif_napi_del(&channel->napi);
@ -1770,8 +1776,8 @@ static int gsi_channel_setup(struct gsi *gsi)
while (channel_id < GSI_CHANNEL_COUNT_MAX) {
struct gsi_channel *channel = &gsi->channel[channel_id++];
if (!channel->gsi)
continue; /* Ignore uninitialized channels */
if (!gsi_channel_initialized(channel))
continue;
ret = -EINVAL;
dev_err(gsi->dev, "channel %u not supported by hardware\n",
@ -2089,8 +2095,8 @@ err_clear_gsi:
/* Inverse of gsi_channel_init_one() */
static void gsi_channel_exit_one(struct gsi_channel *channel)
{
if (!channel->gsi)
return; /* Ignore uninitialized channels */
if (!gsi_channel_initialized(channel))
return;
if (channel->command)
ipa_cmd_pool_exit(channel);