diff options
author | Bin Meng <bmeng.cn@gmail.com> | 2018-10-24 16:36:36 +0300 |
---|---|---|
committer | Simon Glass <sjg@chromium.org> | 2018-11-14 20:16:28 +0300 |
commit | 4687919684e0e4390b9fc20d1809ecaa9dc3cb81 (patch) | |
tree | e0cb2adcd74a9fe071035c2406d109e083129f50 /drivers/serial/serial_bcm6345.c | |
parent | d7a184d4a7d2706f091a3b708060f48a325234ef (diff) | |
download | u-boot-4687919684e0e4390b9fc20d1809ecaa9dc3cb81.tar.xz |
serial: 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>
Reviewed-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'drivers/serial/serial_bcm6345.c')
-rw-r--r-- | drivers/serial/serial_bcm6345.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/drivers/serial/serial_bcm6345.c b/drivers/serial/serial_bcm6345.c index ee5d561bfd..a0e709a11e 100644 --- a/drivers/serial/serial_bcm6345.c +++ b/drivers/serial/serial_bcm6345.c @@ -264,7 +264,6 @@ U_BOOT_DRIVER(bcm6345_serial) = { .probe = bcm6345_serial_probe, .priv_auto_alloc_size = sizeof(struct bcm6345_serial_priv), .ops = &bcm6345_serial_ops, - .flags = DM_FLAG_PRE_RELOC, }; #ifdef CONFIG_DEBUG_UART_BCM6345 |