From: Thierry Reding treding@nvidia.com
[ Upstream commit fad57233501beb5bd25f037cb9128a533e710600 ]
The function table is filled with group information based on other instance-specific data at runtime. However, the function table can be shared between multiple instances, causing the ->probe() function for one instance to overwrite the table of a previously probed instance.
Fix this by sharing only the function names and allocating a separate function table for each instance.
Fixes: 5a0047360743 ("pinctrl: tegra: Separate Tegra194 instances") Signed-off-by: Thierry Reding treding@nvidia.com Link: https://lore.kernel.org/r/20230530105308.1292852-1-thierry.reding@gmail.com Signed-off-by: Linus Walleij linus.walleij@linaro.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/pinctrl/tegra/pinctrl-tegra.c | 15 +++++++++++---- drivers/pinctrl/tegra/pinctrl-tegra.h | 3 ++- drivers/pinctrl/tegra/pinctrl-tegra114.c | 7 ++----- drivers/pinctrl/tegra/pinctrl-tegra124.c | 7 ++----- drivers/pinctrl/tegra/pinctrl-tegra194.c | 7 ++----- drivers/pinctrl/tegra/pinctrl-tegra20.c | 7 ++----- drivers/pinctrl/tegra/pinctrl-tegra210.c | 7 ++----- drivers/pinctrl/tegra/pinctrl-tegra30.c | 7 ++----- 8 files changed, 25 insertions(+), 35 deletions(-)
diff --git a/drivers/pinctrl/tegra/pinctrl-tegra.c b/drivers/pinctrl/tegra/pinctrl-tegra.c index 1729b7ddfa946..21e08fbd1df0e 100644 --- a/drivers/pinctrl/tegra/pinctrl-tegra.c +++ b/drivers/pinctrl/tegra/pinctrl-tegra.c @@ -232,7 +232,7 @@ static const char *tegra_pinctrl_get_func_name(struct pinctrl_dev *pctldev, { struct tegra_pmx *pmx = pinctrl_dev_get_drvdata(pctldev);
- return pmx->soc->functions[function].name; + return pmx->functions[function].name; }
static int tegra_pinctrl_get_func_groups(struct pinctrl_dev *pctldev, @@ -242,8 +242,8 @@ static int tegra_pinctrl_get_func_groups(struct pinctrl_dev *pctldev, { struct tegra_pmx *pmx = pinctrl_dev_get_drvdata(pctldev);
- *groups = pmx->soc->functions[function].groups; - *num_groups = pmx->soc->functions[function].ngroups; + *groups = pmx->functions[function].groups; + *num_groups = pmx->functions[function].ngroups;
return 0; } @@ -795,10 +795,17 @@ int tegra_pinctrl_probe(struct platform_device *pdev, if (!pmx->group_pins) return -ENOMEM;
+ pmx->functions = devm_kcalloc(&pdev->dev, pmx->soc->nfunctions, + sizeof(*pmx->functions), GFP_KERNEL); + if (!pmx->functions) + return -ENOMEM; + group_pins = pmx->group_pins; + for (fn = 0; fn < soc_data->nfunctions; fn++) { - struct tegra_function *func = &soc_data->functions[fn]; + struct tegra_function *func = &pmx->functions[fn];
+ func->name = pmx->soc->functions[fn]; func->groups = group_pins;
for (gn = 0; gn < soc_data->ngroups; gn++) { diff --git a/drivers/pinctrl/tegra/pinctrl-tegra.h b/drivers/pinctrl/tegra/pinctrl-tegra.h index 6130cba7cce54..b3289bdf727d8 100644 --- a/drivers/pinctrl/tegra/pinctrl-tegra.h +++ b/drivers/pinctrl/tegra/pinctrl-tegra.h @@ -13,6 +13,7 @@ struct tegra_pmx { struct pinctrl_dev *pctl;
const struct tegra_pinctrl_soc_data *soc; + struct tegra_function *functions; const char **group_pins;
struct pinctrl_gpio_range gpio_range; @@ -191,7 +192,7 @@ struct tegra_pinctrl_soc_data { const char *gpio_compatible; const struct pinctrl_pin_desc *pins; unsigned npins; - struct tegra_function *functions; + const char * const *functions; unsigned nfunctions; const struct tegra_pingroup *groups; unsigned ngroups; diff --git a/drivers/pinctrl/tegra/pinctrl-tegra114.c b/drivers/pinctrl/tegra/pinctrl-tegra114.c index e72ab1eb23983..3d425b2018e78 100644 --- a/drivers/pinctrl/tegra/pinctrl-tegra114.c +++ b/drivers/pinctrl/tegra/pinctrl-tegra114.c @@ -1452,12 +1452,9 @@ enum tegra_mux { TEGRA_MUX_VI_ALT3, };
-#define FUNCTION(fname) \ - { \ - .name = #fname, \ - } +#define FUNCTION(fname) #fname
-static struct tegra_function tegra114_functions[] = { +static const char * const tegra114_functions[] = { FUNCTION(blink), FUNCTION(cec), FUNCTION(cldvfs), diff --git a/drivers/pinctrl/tegra/pinctrl-tegra124.c b/drivers/pinctrl/tegra/pinctrl-tegra124.c index 26096c6b967e2..2a50c5c7516c3 100644 --- a/drivers/pinctrl/tegra/pinctrl-tegra124.c +++ b/drivers/pinctrl/tegra/pinctrl-tegra124.c @@ -1611,12 +1611,9 @@ enum tegra_mux { TEGRA_MUX_VIMCLK2_ALT, };
-#define FUNCTION(fname) \ - { \ - .name = #fname, \ - } +#define FUNCTION(fname) #fname
-static struct tegra_function tegra124_functions[] = { +static const char * const tegra124_functions[] = { FUNCTION(blink), FUNCTION(ccla), FUNCTION(cec), diff --git a/drivers/pinctrl/tegra/pinctrl-tegra194.c b/drivers/pinctrl/tegra/pinctrl-tegra194.c index 277973c884344..69f58df628977 100644 --- a/drivers/pinctrl/tegra/pinctrl-tegra194.c +++ b/drivers/pinctrl/tegra/pinctrl-tegra194.c @@ -1189,12 +1189,9 @@ enum tegra_mux_dt { };
/* Make list of each function name */ -#define TEGRA_PIN_FUNCTION(lid) \ - { \ - .name = #lid, \ - } +#define TEGRA_PIN_FUNCTION(lid) #lid
-static struct tegra_function tegra194_functions[] = { +static const char * const tegra194_functions[] = { TEGRA_PIN_FUNCTION(rsvd0), TEGRA_PIN_FUNCTION(rsvd1), TEGRA_PIN_FUNCTION(rsvd2), diff --git a/drivers/pinctrl/tegra/pinctrl-tegra20.c b/drivers/pinctrl/tegra/pinctrl-tegra20.c index 0dc2cf0d05b1e..737fc2000f66b 100644 --- a/drivers/pinctrl/tegra/pinctrl-tegra20.c +++ b/drivers/pinctrl/tegra/pinctrl-tegra20.c @@ -1889,12 +1889,9 @@ enum tegra_mux { TEGRA_MUX_XIO, };
-#define FUNCTION(fname) \ - { \ - .name = #fname, \ - } +#define FUNCTION(fname) #fname
-static struct tegra_function tegra20_functions[] = { +static const char * const tegra20_functions[] = { FUNCTION(ahb_clk), FUNCTION(apb_clk), FUNCTION(audio_sync), diff --git a/drivers/pinctrl/tegra/pinctrl-tegra210.c b/drivers/pinctrl/tegra/pinctrl-tegra210.c index b480f607fa16f..9bb29146dfff7 100644 --- a/drivers/pinctrl/tegra/pinctrl-tegra210.c +++ b/drivers/pinctrl/tegra/pinctrl-tegra210.c @@ -1185,12 +1185,9 @@ enum tegra_mux { TEGRA_MUX_VIMCLK2, };
-#define FUNCTION(fname) \ - { \ - .name = #fname, \ - } +#define FUNCTION(fname) #fname
-static struct tegra_function tegra210_functions[] = { +static const char * const tegra210_functions[] = { FUNCTION(aud), FUNCTION(bcl), FUNCTION(blink), diff --git a/drivers/pinctrl/tegra/pinctrl-tegra30.c b/drivers/pinctrl/tegra/pinctrl-tegra30.c index 7299a371827f1..de5aa2d4d28d3 100644 --- a/drivers/pinctrl/tegra/pinctrl-tegra30.c +++ b/drivers/pinctrl/tegra/pinctrl-tegra30.c @@ -2010,12 +2010,9 @@ enum tegra_mux { TEGRA_MUX_VI_ALT3, };
-#define FUNCTION(fname) \ - { \ - .name = #fname, \ - } +#define FUNCTION(fname) #fname
-static struct tegra_function tegra30_functions[] = { +static const char * const tegra30_functions[] = { FUNCTION(blink), FUNCTION(cec), FUNCTION(clk_12m_out),