@@ -66,7 +66,7 @@ struct ipa_interrupt;
* @defined: Bitmap of endpoints defined in config data
* @available: Bitmap of endpoints supported by hardware
* @filtered: Bitmap of endpoints that support filtering
- * @set_up: Bit mask indicating endpoints set up
+ * @set_up: Bitmap of endpoints that are set up for use
* @enabled: Bit mask indicating endpoints enabled
* @modem_tx_count: Number of defined modem TX endoints
* @endpoint: Array of endpoint information
@@ -124,7 +124,7 @@ struct ipa {
unsigned long *defined; /* Defined in configuration data */
unsigned long *available; /* Supported by hardware */
u64 filtered; /* Support filtering (AP and modem) */
- u32 set_up;
+ unsigned long *set_up;
u32 enabled;
u32 modem_tx_count;
@@ -1802,12 +1802,12 @@ static void ipa_endpoint_setup_one(struct ipa_endpoint *endpoint)
ipa_endpoint_program(endpoint);
- endpoint->ipa->set_up |= BIT(endpoint->endpoint_id);
+ __set_bit(endpoint->endpoint_id, endpoint->ipa->set_up);
}
static void ipa_endpoint_teardown_one(struct ipa_endpoint *endpoint)
{
- endpoint->ipa->set_up &= ~BIT(endpoint->endpoint_id);
+ __clear_bit(endpoint->endpoint_id, endpoint->ipa->set_up);
if (!endpoint->toward_ipa)
cancel_delayed_work_sync(&endpoint->replenish_work);
@@ -1819,23 +1819,16 @@ void ipa_endpoint_setup(struct ipa *ipa)
{
u32 endpoint_id;
- ipa->set_up = 0;
for_each_set_bit(endpoint_id, ipa->defined, ipa->endpoint_count)
ipa_endpoint_setup_one(&ipa->endpoint[endpoint_id]);
}
void ipa_endpoint_teardown(struct ipa *ipa)
{
- u32 set_up = ipa->set_up;
-
- while (set_up) {
- u32 endpoint_id = __fls(set_up);
-
- set_up ^= BIT(endpoint_id);
+ u32 endpoint_id;
+ for_each_set_bit(endpoint_id, ipa->set_up, ipa->endpoint_count)
ipa_endpoint_teardown_one(&ipa->endpoint[endpoint_id]);
- }
- ipa->set_up = 0;
}
int ipa_endpoint_config(struct ipa *ipa)
@@ -1977,7 +1970,9 @@ void ipa_endpoint_exit(struct ipa *ipa)
for_each_set_bit(endpoint_id, ipa->defined, ipa->endpoint_count)
ipa_endpoint_exit_one(&ipa->endpoint[endpoint_id]);
+ bitmap_free(ipa->set_up);
bitmap_free(ipa->defined);
+ ipa->set_up = NULL;
ipa->defined = NULL;
memset(ipa->name_map, 0, sizeof(ipa->name_map));
@@ -2001,8 +1996,11 @@ int ipa_endpoint_init(struct ipa *ipa, u32 count,
/* Set up the defined endpoint bitmap */
ipa->defined = bitmap_zalloc(ipa->endpoint_count, GFP_KERNEL);
- if (!ipa->defined) {
- dev_err(dev, "unable to allocate defined endpoint bitmap\n");
+ ipa->set_up = bitmap_zalloc(ipa->endpoint_count, GFP_KERNEL);
+ if (!ipa->defined || !ipa->set_up) {
+ dev_err(dev, "unable to allocate endpoint bitmaps\n");
+ bitmap_free(ipa->defined);
+ ipa->defined = NULL;
return -ENOMEM;
}
Replace the 32-bit unsigned used to track endpoints that have completed setup with a Linux bitmap, to allow an arbitrary number of endpoints to be represented. Signed-off-by: Alex Elder <elder@linaro.org> --- drivers/net/ipa/ipa.h | 4 ++-- drivers/net/ipa/ipa_endpoint.c | 24 +++++++++++------------- 2 files changed, 13 insertions(+), 15 deletions(-)