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gpio: htc-egpio: allocate irq with the main struct

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Use a flexible array member to combinwe allocations.

Add __counted_by for extra runtime analysis.

Signed-off-by: Rosen Penev <rosenp@gmail.com>
Link: https://patch.msgid.link/20260309225204.44789-1-rosenp@gmail.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
This commit is contained in:
Rosen Penev 2026-03-09 15:52:04 -07:00 committed by Bartosz Golaszewski
parent 0258fe8721
commit 223d9a310c
1 changed files with 4 additions and 9 deletions
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13
drivers/gpio/gpio-htc-egpio.c
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@ -46,8 +46,8 @@ struct egpio_info {
uint chained_irq;
/* egpio info */
struct egpio_chip *chip;
int nchips;
struct egpio_chip chip[] __counted_by(nchips);
};
static inline void egpio_writew(u16 value, struct egpio_info *ei, int reg)
@ -270,10 +270,12 @@ static int __init egpio_probe(struct platform_device *pdev)
int i;
/* Initialize ei data structure. */
ei = devm_kzalloc(&pdev->dev, sizeof(*ei), GFP_KERNEL);
ei = devm_kzalloc(&pdev->dev, struct_size(ei, chip, pdata->num_chips), GFP_KERNEL);
if (!ei)
return -ENOMEM;
ei->nchips = pdata->num_chips;
spin_lock_init(&ei->lock);
/* Find chained irq */
@ -302,13 +304,6 @@ static int __init egpio_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, ei);
ei->nchips = pdata->num_chips;
ei->chip = devm_kcalloc(&pdev->dev,
ei->nchips, sizeof(struct egpio_chip),
GFP_KERNEL);
if (!ei->chip)
return -ENOMEM;
for (i = 0; i < ei->nchips; i++) {
ei->chip[i].reg_start = pdata->chip[i].reg_start;
ei->chip[i].cached_values = pdata->chip[i].initial_values;