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net: ipa: clean up interconnect initialization 

Pass an the address of an IPA interconnect structure and its
configuration data to ipa_interconnect_init_one() and have that
function initialize all the structure's fields.  Change the function
to simply return an error code.

Introduce ipa_interconnect_exit_one() to encapsulate the cleanup of
an IPA interconnect structure.

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Alex Elder 2021-01-15 06:50:49 -06:00 committed by Jakub Kicinski
parent e938d7ef92
commit 10d0d39701
1 changed files with 47 additions and 36 deletions
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83
drivers/net/ipa/ipa_clock.c
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@ -56,17 +56,33 @@ struct ipa_clock {
struct ipa_interconnect interconnect[IPA_INTERCONNECT_COUNT];
};
static struct icc_path *
ipa_interconnect_init_one(struct device *dev, const char *name)
static int ipa_interconnect_init_one(struct device *dev,
struct ipa_interconnect *interconnect,
const struct ipa_interconnect_data *data)
{
struct icc_path *path;
path = of_icc_get(dev, name);
if (IS_ERR(path))
dev_err(dev, "error %d getting %s interconnect\n",
(int)PTR_ERR(path), name);
path = of_icc_get(dev, data->name);
if (IS_ERR(path)) {
int ret = PTR_ERR(path);
return path;
dev_err(dev, "error %d getting %s interconnect\n", ret,
data->name);
return ret;
}
interconnect->path = path;
interconnect->average_bandwidth = data->average_bandwidth;
interconnect->peak_bandwidth = data->peak_bandwidth;
return 0;
}
static void ipa_interconnect_exit_one(struct ipa_interconnect *interconnect)
{
icc_put(interconnect->path);
memset(interconnect, 0, sizeof(*interconnect));
}
/* Initialize interconnects required for IPA operation */
@ -74,51 +90,46 @@ static int ipa_interconnect_init(struct ipa_clock *clock, struct device *dev,
const struct ipa_interconnect_data *data)
{
struct ipa_interconnect *interconnect;
struct icc_path *path;
int ret;
path = ipa_interconnect_init_one(dev, data->name);
if (IS_ERR(path))
goto err_return;
interconnect = &clock->interconnect[IPA_INTERCONNECT_MEMORY];
interconnect->path = path;
interconnect->average_bandwidth = data->average_bandwidth;
interconnect->peak_bandwidth = data->peak_bandwidth;
data++;
ret = ipa_interconnect_init_one(dev, interconnect, data++);
if (ret)
return ret;
path = ipa_interconnect_init_one(dev, data->name);
if (IS_ERR(path))
goto err_memory_path_put;
interconnect = &clock->interconnect[IPA_INTERCONNECT_IMEM];
interconnect->path = path;
interconnect->average_bandwidth = data->average_bandwidth;
interconnect->peak_bandwidth = data->peak_bandwidth;
data++;
ret = ipa_interconnect_init_one(dev, interconnect, data++);
if (ret)
goto err_memory_path_put;
path = ipa_interconnect_init_one(dev, data->name);
if (IS_ERR(path))
interconnect = &clock->interconnect[IPA_INTERCONNECT_IMEM];
ret = ipa_interconnect_init_one(dev, interconnect, data++);
if (ret)
goto err_imem_path_put;
interconnect = &clock->interconnect[IPA_INTERCONNECT_CONFIG];
interconnect->path = path;
interconnect->average_bandwidth = data->average_bandwidth;
interconnect->peak_bandwidth = data->peak_bandwidth;
data++;
return 0;
err_imem_path_put:
icc_put(clock->interconnect[IPA_INTERCONNECT_IMEM].path);
interconnect = &clock->interconnect[IPA_INTERCONNECT_IMEM];
ipa_interconnect_exit_one(interconnect);
err_memory_path_put:
icc_put(clock->interconnect[IPA_INTERCONNECT_MEMORY].path);
err_return:
return PTR_ERR(path);
interconnect = &clock->interconnect[IPA_INTERCONNECT_MEMORY];
ipa_interconnect_exit_one(interconnect);
return ret;
}
/* Inverse of ipa_interconnect_init() */
static void ipa_interconnect_exit(struct ipa_clock *clock)
{
icc_put(clock->interconnect[IPA_INTERCONNECT_CONFIG].path);
icc_put(clock->interconnect[IPA_INTERCONNECT_IMEM].path);
icc_put(clock->interconnect[IPA_INTERCONNECT_MEMORY].path);
struct ipa_interconnect *interconnect;
interconnect = &clock->interconnect[IPA_INTERCONNECT_CONFIG];
ipa_interconnect_exit_one(interconnect);
interconnect = &clock->interconnect[IPA_INTERCONNECT_IMEM];
ipa_interconnect_exit_one(interconnect);
interconnect = &clock->interconnect[IPA_INTERCONNECT_MEMORY];
ipa_interconnect_exit_one(interconnect);
}
/* Currently we only use one bandwidth level, so just "enable" interconnects */