spmi: pmic-arb: fix memory allocation for mapping_table

Allocate the correct memory size (max_pmic_peripherals) for the
mapping_table that holds the apid to ppid mapping. Also use a local
variable for mapping_table for better alignment of the code.

Fixes: 987a9f128b8a ("spmi: pmic-arb: Support more than 128 peripherals")
Signed-off-by: Kiran Gunda <kgunda@codeaurora.org>
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/spmi/spmi-pmic-arb.c b/drivers/spmi/spmi-pmic-arb.c
index 0577cfd..340e7b8 100644 (file)
--- a/drivers/spmi/spmi-pmic-arb.c
+++ b/drivers/spmi/spmi-pmic-arb.c
@@ -929,6 +929,7 @@ static int spmi_pmic_arb_probe(struct platform_device *pdev)
        struct spmi_controller *ctrl;
        struct resource *res;
        void __iomem *core;
+       u32 *mapping_table;
        u32 channel, ee, hw_ver;
        int err;
 
@@ -1038,16 +1039,14 @@ static int spmi_pmic_arb_probe(struct platform_device *pdev)
        }
 
        pmic_arb->ee = ee;
-
-       pmic_arb->mapping_table = devm_kcalloc(&ctrl->dev,
-                                       PMIC_ARB_MAX_PERIPHS - 1,
-                                       sizeof(*pmic_arb->mapping_table),
-                                       GFP_KERNEL);
-       if (!pmic_arb->mapping_table) {
+       mapping_table = devm_kcalloc(&ctrl->dev, PMIC_ARB_MAX_PERIPHS,
+                                       sizeof(*mapping_table), GFP_KERNEL);
+       if (!mapping_table) {
                err = -ENOMEM;
                goto err_put_ctrl;
        }
 
+       pmic_arb->mapping_table = mapping_table;
        /* Initialize max_apid/min_apid to the opposite bounds, during
         * the irq domain translation, we are sure to update these */
        pmic_arb->max_apid = 0;