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nvmem: fix nvmem_cell_get_from_lookup()

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We check if the pointer returned by __nvmem_device_get() is not NULL
while we should actually check if it is not IS_ERR(nvmem). Fix it.

While we're at it: fix the next error path where we should assign an
error value to cell before returning.

Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Acked-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Bartosz Golaszewski 2018-10-03 09:31:11 +02:00 committed by Greg Kroah-Hartman
parent badcdff107
commit cccb3b19e7
1 changed files with 3 additions and 2 deletions
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5
drivers/nvmem/core.c
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@ -953,9 +953,9 @@ nvmem_cell_get_from_lookup(struct device *dev, const char *con_id)
(strcmp(lookup->con_id, con_id) == 0)) {
/* This is the right entry. */
nvmem = __nvmem_device_get(NULL, lookup->nvmem_name);
if (!nvmem) {
if (IS_ERR(nvmem)) {
/* Provider may not be registered yet. */
cell = ERR_PTR(-EPROBE_DEFER);
cell = ERR_CAST(nvmem);
goto out;
}
@ -963,6 +963,7 @@ nvmem_cell_get_from_lookup(struct device *dev, const char *con_id)
lookup->cell_name);
if (!cell) {
__nvmem_device_put(nvmem);
cell = ERR_PTR(-ENOENT);
goto out;
}
}