From: U-Boot u-boot-bounces@lists.denx.de On Behalf Of Bin Meng Sent: mercredi 24 octobre 2018 15:37
Subject: [U-Boot] [PATCH 03/13] gpio: Remove DM_FLAG_PRE_RELOC flag in various drivers
When a driver declares DM_FLAG_PRE_RELOC flag, it wishes to be bound before relocation. However due to a bug in the DM core, the flag only takes effect when devices are statically declared via U_BOOT_DEVICE(). This bug has been fixed recently by commit "dm: core: Respect drivers with the DM_FLAG_PRE_RELOC flag in lists_bind_fdt()", but with the fix, it has a side effect that all existing drivers that declared DM_FLAG_PRE_RELOC flag will be bound before relocation now. This may expose potential boot failure on some boards due to insufficient memory during the pre-relocation stage.
To mitigate this potential impact, the following changes are implemented:
- Remove DM_FLAG_PRE_RELOC flag in the driver, if the driver only supports configuration from device tree (OF_CONTROL)
- Keep DM_FLAG_PRE_RELOC flag in the driver only if the device is statically declared via U_BOOT_DEVICE()
- Surround DM_FLAG_PRE_RELOC flag with OF_CONTROL check, for drivers that support both statically declared devices and configuration from device tree
Signed-off-by: Bin Meng bmeng.cn@gmail.com
drivers/gpio/omap_gpio.c | 2 ++ drivers/gpio/stm32f7_gpio.c | 2 +- drivers/gpio/tegra186_gpio.c | 1 - drivers/gpio/tegra_gpio.c | 1 - 4 files changed, 3 insertions(+), 3 deletions(-)
Applied to u-boot-dm/master, thanks!