[PATCH v3 07/15] pinctrl: keembay: release allocated memory in detach path

[Bartosz Golaszewski]

From: Bartosz Golaszewski <bartosz.golaszew...@linaro.org>

Unlike all the other allocations in this driver, the memory for storing
the pin function descriptions allocated with kcalloc() and later resized
with krealloc() is never freed. Use devres like elsewhere to handle
that.

Note: the logic in this module is pretty convoluted and could probably
use some revisiting, we should probably be able to calculate the exact
amount of memory needed in advance or even skip the allocation
alltogether and just add each function to the radix tree separately.

Signed-off-by: Bartosz Golaszewski <bartosz.golaszew...@linaro.org>
---
 drivers/pinctrl/pinctrl-keembay.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/pinctrl/pinctrl-keembay.c 
b/drivers/pinctrl/pinctrl-keembay.c
index 
30e641571cfe5396075cb28febd2d0776326365d..b4c7b3ef79e0a34111f46f23adfee4c269e5be6e
 100644
--- a/drivers/pinctrl/pinctrl-keembay.c
+++ b/drivers/pinctrl/pinctrl-keembay.c
@@ -1603,7 +1603,8 @@ static int keembay_build_functions(struct keembay_pinctrl 
*kpc)
         * being part of 8 (hw maximum) globally unique muxes.
         */
        kpc->nfuncs = 0;
-       keembay_funcs = kcalloc(kpc->npins * 8, sizeof(*keembay_funcs), 
GFP_KERNEL);
+       keembay_funcs = devm_kcalloc(kpc->dev, kpc->npins * 8,
+                                    sizeof(*keembay_funcs), GFP_KERNEL);
        if (!keembay_funcs)
                return -ENOMEM;
 
@@ -1634,7 +1635,8 @@ static int keembay_build_functions(struct keembay_pinctrl 
*kpc)
        }
 
        /* Reallocate memory based on actual number of functions */
-       new_funcs = krealloc(keembay_funcs, kpc->nfuncs * sizeof(*new_funcs), 
GFP_KERNEL);
+       new_funcs = devm_krealloc(kpc->dev, keembay_funcs,
+                                 kpc->nfuncs * sizeof(*new_funcs), GFP_KERNEL);
        if (!new_funcs) {
                kfree(keembay_funcs);
                return -ENOMEM;

-- 
2.48.1