diff options
| author | Bin Meng | 2018-10-24 06:36:39 -0700 |
|---|---|---|
| committer | Simon Glass | 2018-11-14 09:16:28 -0800 |
| commit | 8ee27da343aac7ba88b1efab620fc5ef30325ded (patch) | |
| tree | 2f728102fa7fb1d296c85fa0bcf33aa46b133aa3 /drivers/watchdog | |
| parent | e3245e4254e1e5caae24b33e203810db7307edfb (diff) | |
watchdog: 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/watchdog')
| -rw-r--r-- | drivers/watchdog/ast_wdt.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/drivers/watchdog/ast_wdt.c b/drivers/watchdog/ast_wdt.c index 59afa21efa4..523484b1fff 100644 --- a/drivers/watchdog/ast_wdt.c +++ b/drivers/watchdog/ast_wdt.c @@ -119,5 +119,4 @@ U_BOOT_DRIVER(ast_wdt) = { .priv_auto_alloc_size = sizeof(struct ast_wdt_priv), .ofdata_to_platdata = ast_wdt_ofdata_to_platdata, .ops = &ast_wdt_ops, - .flags = DM_FLAG_PRE_RELOC, }; |