scripts/checkpatch.pl was written originally for the Linux kernel, and
its code reflects the kernel's coding style. In particular, it has
checks for unneeded braces around single-statement if/else/for/while
conditions. In Zephyr however, braces are always required, and so the
checks needed modifying to verify the opposite condition.
In order to enable the now-compatible checks, we also remove the
--ignore BRACES statement in .checkpatch.conf.
Limitations: the current code works well if there are not conditional
statements (e.g. #if, #ifdef or #endif) next to the if/else/for/while
conditions. This is rarely the case, but triggers with the Bluetooth
controller in code like this:
```
#if defined(CONFIG_BT_PERIPHERAL)
if (!lll->is_hdcd)
#endif /* CONFIG_BT_PERIPHERAL */
{
```
```
} else
#endif /* CONFIG_BT_CTLR_PRIVACY */
{
```
```
#if defined(CONFIG_BT_CTLR_DF_ADV_CTE_TX)
if (lll->cte_started) {
radio_switch_complete(phy_s, 0, phy_s, 0);
} else
#endif /* CONFIG_BT_CTLR_DF_ADV_CTE_TX */
{
```
```
#ifdef DUAL_BANK
while ((FLASH_STM32_REGS(dev)->SR1 & FLASH_SR_QW) ||
(FLASH_STM32_REGS(dev)->SR2 & FLASH_SR_QW))
#else
while (FLASH_STM32_REGS(dev)->SR1 & FLASH_SR_QW)
#endif
{
```
Signed-off-by: Carles Cufi <carles.cufi@nordicsemi.no>
Carles Cufi