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>

26 files changed, 18 insertions, 17 deletions

diff --git a/drivers/serial/altera_jtag_uart.c b/drivers/serial/altera_jtag_uart.c
index 61052a92d6..86c3de4e45 100644
--- a/drivers/serial/altera_jtag_uart.c
+++ b/drivers/serial/altera_jtag_uart.c
@@ -121,7 +121,6 @@ U_BOOT_DRIVER(altera_jtaguart) = {
 	.platdata_auto_alloc_size = sizeof(struct altera_jtaguart_platdata),
 	.probe = altera_jtaguart_probe,
 	.ops	= &altera_jtaguart_ops,
-	.flags = DM_FLAG_PRE_RELOC,
 };
 
 #ifdef CONFIG_DEBUG_UART_ALTERA_JTAGUART
diff --git a/drivers/serial/altera_uart.c b/drivers/serial/altera_uart.c
index b7b0a13ca1..67d47199aa 100644
--- a/drivers/serial/altera_uart.c
+++ b/drivers/serial/altera_uart.c
@@ -117,7 +117,6 @@ U_BOOT_DRIVER(altera_uart) = {
 	.platdata_auto_alloc_size = sizeof(struct altera_uart_platdata),
 	.probe = altera_uart_probe,
 	.ops	= &altera_uart_ops,
-	.flags = DM_FLAG_PRE_RELOC,
 };
 
 #ifdef CONFIG_DEBUG_UART_ALTERA_UART
diff --git a/drivers/serial/arm_dcc.c b/drivers/serial/arm_dcc.c
index 43e8691a93..dfcb6fd698 100644
--- a/drivers/serial/arm_dcc.c
+++ b/drivers/serial/arm_dcc.c
@@ -155,7 +155,6 @@ U_BOOT_DRIVER(serial_dcc) = {
 	.id	= UCLASS_SERIAL,
 	.of_match = arm_dcc_ids,
 	.ops	= &arm_dcc_ops,
-	.flags = DM_FLAG_PRE_RELOC,
 };
 
 #ifdef CONFIG_DEBUG_UART_ARM_DCC
diff --git a/drivers/serial/atmel_usart.c b/drivers/serial/atmel_usart.c
index 9414f5f692..aa8cdff840 100644
--- a/drivers/serial/atmel_usart.c
+++ b/drivers/serial/atmel_usart.c
@@ -294,7 +294,9 @@ U_BOOT_DRIVER(serial_atmel) = {
 #endif
 	.probe = atmel_serial_probe,
 	.ops	= &atmel_serial_ops,
+#if !CONFIG_IS_ENABLED(OF_CONTROL)
 	.flags = DM_FLAG_PRE_RELOC,
+#endif
 	.priv_auto_alloc_size	= sizeof(struct atmel_serial_priv),
 };
 #endif
diff --git a/drivers/serial/ns16550.c b/drivers/serial/ns16550.c
index 04b604fa2c..1e6fc6c668 100644
--- a/drivers/serial/ns16550.c
+++ b/drivers/serial/ns16550.c
@@ -487,7 +487,9 @@ U_BOOT_DRIVER(ns16550_serial) = {
 	.priv_auto_alloc_size = sizeof(struct NS16550),
 	.probe = ns16550_serial_probe,
 	.ops	= &ns16550_serial_ops,
+#if !CONFIG_IS_ENABLED(OF_CONTROL)
 	.flags	= DM_FLAG_PRE_RELOC,
+#endif
 };
 #endif
 #endif /* SERIAL_PRESENT */
diff --git a/drivers/serial/serial_ar933x.c b/drivers/serial/serial_ar933x.c
index e91a5f7b24..5249c55398 100644
--- a/drivers/serial/serial_ar933x.c
+++ b/drivers/serial/serial_ar933x.c
@@ -189,7 +189,6 @@ U_BOOT_DRIVER(serial_ar933x) = {
 	.priv_auto_alloc_size = sizeof(struct ar933x_serial_priv),
 	.probe = ar933x_serial_probe,
 	.ops    = &ar933x_serial_ops,
-	.flags = DM_FLAG_PRE_RELOC,
 };
 
 #ifdef CONFIG_DEBUG_UART_AR933X
diff --git a/drivers/serial/serial_arc.c b/drivers/serial/serial_arc.c
index 925f0c2555..980b38d2a1 100644
--- a/drivers/serial/serial_arc.c
+++ b/drivers/serial/serial_arc.c
@@ -128,7 +128,6 @@ U_BOOT_DRIVER(serial_arc) = {
 	.ofdata_to_platdata = arc_serial_ofdata_to_platdata,
 	.probe = arc_serial_probe,
 	.ops	= &arc_serial_ops,
-	.flags = DM_FLAG_PRE_RELOC,
 };
 
 #ifdef CONFIG_DEBUG_ARC_SERIAL
diff --git a/drivers/serial/serial_bcm283x_mu.c b/drivers/serial/serial_bcm283x_mu.c
index 1f87f0cb28..bd1d89ec83 100644
--- a/drivers/serial/serial_bcm283x_mu.c
+++ b/drivers/serial/serial_bcm283x_mu.c
@@ -199,6 +199,8 @@ U_BOOT_DRIVER(serial_bcm283x_mu) = {
 	.platdata_auto_alloc_size = sizeof(struct bcm283x_mu_serial_platdata),
 	.probe = bcm283x_mu_serial_probe,
 	.ops = &bcm283x_mu_serial_ops,
+#if !CONFIG_IS_ENABLED(OF_CONTROL)
 	.flags = DM_FLAG_PRE_RELOC,
+#endif
 	.priv_auto_alloc_size = sizeof(struct bcm283x_mu_priv),
 };
diff --git a/drivers/serial/serial_bcm283x_pl011.c b/drivers/serial/serial_bcm283x_pl011.c
index 54fc9b5b39..2527bb8b1c 100644
--- a/drivers/serial/serial_bcm283x_pl011.c
+++ b/drivers/serial/serial_bcm283x_pl011.c
@@ -90,6 +90,8 @@ U_BOOT_DRIVER(bcm283x_pl011_uart) = {
 	.platdata_auto_alloc_size = sizeof(struct pl01x_serial_platdata),
 	.probe	= pl01x_serial_probe,
 	.ops	= &bcm283x_pl011_serial_ops,
+#if !CONFIG_IS_ENABLED(OF_CONTROL)
 	.flags	= DM_FLAG_PRE_RELOC,
+#endif
 	.priv_auto_alloc_size = sizeof(struct pl01x_priv),
 };
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
diff --git a/drivers/serial/serial_efi.c b/drivers/serial/serial_efi.c
index 1b54d1880f..dd3e511fc9 100644
--- a/drivers/serial/serial_efi.c
+++ b/drivers/serial/serial_efi.c
@@ -152,5 +152,4 @@ U_BOOT_DRIVER(serial_efi) = {
 	.priv_auto_alloc_size = sizeof(struct serial_efi_priv),
 	.probe = serial_efi_probe,
 	.ops	= &serial_efi_ops,
-	.flags = DM_FLAG_PRE_RELOC,
 };
diff --git a/drivers/serial/serial_intel_mid.c b/drivers/serial/serial_intel_mid.c
index bdb5adb2a4..39bd40e68b 100644
--- a/drivers/serial/serial_intel_mid.c
+++ b/drivers/serial/serial_intel_mid.c
@@ -64,5 +64,4 @@ U_BOOT_DRIVER(serial_intel_mid) = {
 	.priv_auto_alloc_size = sizeof(struct NS16550),
 	.probe	= mid_serial_probe,
 	.ops	= &ns16550_serial_ops,
-	.flags	= DM_FLAG_PRE_RELOC,
 };
diff --git a/drivers/serial/serial_lpuart.c b/drivers/serial/serial_lpuart.c
index 6106c1f9ec..a357b00d28 100644
--- a/drivers/serial/serial_lpuart.c
+++ b/drivers/serial/serial_lpuart.c
@@ -540,5 +540,4 @@ U_BOOT_DRIVER(serial_lpuart) = {
 	.platdata_auto_alloc_size = sizeof(struct lpuart_serial_platdata),
 	.probe = lpuart_serial_probe,
 	.ops	= &lpuart_serial_ops,
-	.flags = DM_FLAG_PRE_RELOC,
 };
diff --git a/drivers/serial/serial_meson.c b/drivers/serial/serial_meson.c
index dbb853735f..b3dad77aa2 100644
--- a/drivers/serial/serial_meson.c
+++ b/drivers/serial/serial_meson.c
@@ -132,7 +132,6 @@ U_BOOT_DRIVER(serial_meson) = {
 	.of_match	= meson_serial_ids,
 	.probe		= meson_serial_probe,
 	.ops		= &meson_serial_ops,
-	.flags		= DM_FLAG_PRE_RELOC,
 	.ofdata_to_platdata = meson_serial_ofdata_to_platdata,
 	.platdata_auto_alloc_size = sizeof(struct meson_serial_platdata),
 };
diff --git a/drivers/serial/serial_mvebu_a3700.c b/drivers/serial/serial_mvebu_a3700.c
index ce26d2bd15..7e4cd6c4b4 100644
--- a/drivers/serial/serial_mvebu_a3700.c
+++ b/drivers/serial/serial_mvebu_a3700.c
@@ -129,7 +129,6 @@ U_BOOT_DRIVER(serial_mvebu) = {
 	.platdata_auto_alloc_size = sizeof(struct mvebu_platdata),
 	.probe	= mvebu_serial_probe,
 	.ops	= &mvebu_serial_ops,
-	.flags	= DM_FLAG_PRE_RELOC,
 };
 
 #ifdef CONFIG_DEBUG_MVEBU_A3700_UART
diff --git a/drivers/serial/serial_mxc.c b/drivers/serial/serial_mxc.c
index e586c18cf0..7e4e6d36b8 100644
--- a/drivers/serial/serial_mxc.c
+++ b/drivers/serial/serial_mxc.c
@@ -354,7 +354,9 @@ U_BOOT_DRIVER(serial_mxc) = {
 #endif
 	.probe = mxc_serial_probe,
 	.ops	= &mxc_serial_ops,
+#if !CONFIG_IS_ENABLED(OF_CONTROL)
 	.flags = DM_FLAG_PRE_RELOC,
+#endif
 };
 #endif
 
diff --git a/drivers/serial/serial_omap.c b/drivers/serial/serial_omap.c
index af3c755f96..ee6ad9c9e5 100644
--- a/drivers/serial/serial_omap.c
+++ b/drivers/serial/serial_omap.c
@@ -121,7 +121,9 @@ U_BOOT_DRIVER(omap_serial) = {
 	.priv_auto_alloc_size = sizeof(struct NS16550),
 	.probe = ns16550_serial_probe,
 	.ops	= &ns16550_serial_ops,
+#if !CONFIG_IS_ENABLED(OF_CONTROL)
 	.flags	= DM_FLAG_PRE_RELOC,
+#endif
 };
 #endif
 #endif /* DM_SERIAL */
diff --git a/drivers/serial/serial_owl.c b/drivers/serial/serial_owl.c
index 6fd97e2502..7ead73e6b7 100644
--- a/drivers/serial/serial_owl.c
+++ b/drivers/serial/serial_owl.c
@@ -132,5 +132,4 @@ U_BOOT_DRIVER(serial_owl) = {
 	.priv_auto_alloc_size =	sizeof(struct owl_serial_priv),
 	.probe = owl_serial_probe,
 	.ops = &owl_serial_ops,
-	.flags = DM_FLAG_PRE_RELOC,
 };
diff --git a/drivers/serial/serial_pic32.c b/drivers/serial/serial_pic32.c
index ba73978e25..84600b1201 100644
--- a/drivers/serial/serial_pic32.c
+++ b/drivers/serial/serial_pic32.c
@@ -176,7 +176,6 @@ U_BOOT_DRIVER(pic32_serial) = {
 	.of_match	= pic32_uart_ids,
 	.probe		= pic32_uart_probe,
 	.ops		= &pic32_uart_ops,
-	.flags		= DM_FLAG_PRE_RELOC,
 	.priv_auto_alloc_size = sizeof(struct pic32_uart_priv),
 };
 
diff --git a/drivers/serial/serial_pl01x.c b/drivers/serial/serial_pl01x.c
index 2a5f256184..12512f6578 100644
--- a/drivers/serial/serial_pl01x.c
+++ b/drivers/serial/serial_pl01x.c
@@ -363,7 +363,9 @@ U_BOOT_DRIVER(serial_pl01x) = {
 	.platdata_auto_alloc_size = sizeof(struct pl01x_serial_platdata),
 	.probe = pl01x_serial_probe,
 	.ops	= &pl01x_serial_ops,
+#if !CONFIG_IS_ENABLED(OF_CONTROL)
 	.flags = DM_FLAG_PRE_RELOC,
+#endif
 	.priv_auto_alloc_size = sizeof(struct pl01x_priv),
 };
 
diff --git a/drivers/serial/serial_s5p.c b/drivers/serial/serial_s5p.c
index faea6d4c99..e3160cf1bd 100644
--- a/drivers/serial/serial_s5p.c
+++ b/drivers/serial/serial_s5p.c
@@ -211,7 +211,6 @@ U_BOOT_DRIVER(serial_s5p) = {
 	.platdata_auto_alloc_size = sizeof(struct s5p_serial_platdata),
 	.probe = s5p_serial_probe,
 	.ops	= &s5p_serial_ops,
-	.flags = DM_FLAG_PRE_RELOC,
 };
 #endif
 
diff --git a/drivers/serial/serial_sh.c b/drivers/serial/serial_sh.c
index b1534981f8..c934d5f25a 100644
--- a/drivers/serial/serial_sh.c
+++ b/drivers/serial/serial_sh.c
@@ -247,7 +247,9 @@ U_BOOT_DRIVER(serial_sh) = {
 	.platdata_auto_alloc_size = sizeof(struct sh_serial_platdata),
 	.probe	= sh_serial_probe,
 	.ops	= &sh_serial_ops,
+#if !CONFIG_IS_ENABLED(OF_CONTROL)
 	.flags	= DM_FLAG_PRE_RELOC,
+#endif
 	.priv_auto_alloc_size = sizeof(struct uart_port),
 };
 
diff --git a/drivers/serial/serial_sti_asc.c b/drivers/serial/serial_sti_asc.c
index 5dfc6171eb..c972f1e9af 100644
--- a/drivers/serial/serial_sti_asc.c
+++ b/drivers/serial/serial_sti_asc.c
@@ -205,6 +205,5 @@ U_BOOT_DRIVER(serial_sti_asc) = {
 	.ops = &sti_asc_serial_ops,
 	.probe = sti_asc_serial_probe,
 	.priv_auto_alloc_size = sizeof(struct sti_asc_serial),
-	.flags = DM_FLAG_PRE_RELOC,
 };
 
diff --git a/drivers/serial/serial_stm32.c b/drivers/serial/serial_stm32.c
index 66e02d5689..31b43ee88d 100644
--- a/drivers/serial/serial_stm32.c
+++ b/drivers/serial/serial_stm32.c
@@ -230,7 +230,9 @@ U_BOOT_DRIVER(serial_stm32) = {
 	.platdata_auto_alloc_size = sizeof(struct stm32x7_serial_platdata),
 	.ops = &stm32_serial_ops,
 	.probe = stm32_serial_probe,
+#if !CONFIG_IS_ENABLED(OF_CONTROL)
 	.flags = DM_FLAG_PRE_RELOC,
+#endif
 };
 
 #ifdef CONFIG_DEBUG_UART_STM32
diff --git a/drivers/serial/serial_xuartlite.c b/drivers/serial/serial_xuartlite.c
index cead3c62f5..1be777bd3b 100644
--- a/drivers/serial/serial_xuartlite.c
+++ b/drivers/serial/serial_xuartlite.c
@@ -109,7 +109,6 @@ U_BOOT_DRIVER(serial_uartlite) = {
 	.platdata_auto_alloc_size = sizeof(struct uartlite_platdata),
 	.probe = uartlite_serial_probe,
 	.ops	= &uartlite_serial_ops,
-	.flags = DM_FLAG_PRE_RELOC,
 };
 
 #ifdef CONFIG_DEBUG_UART_UARTLITE
diff --git a/drivers/serial/serial_zynq.c b/drivers/serial/serial_zynq.c
index f689015b4a..7e486a68ff 100644
--- a/drivers/serial/serial_zynq.c
+++ b/drivers/serial/serial_zynq.c
@@ -210,7 +210,6 @@ U_BOOT_DRIVER(serial_zynq) = {
 	.platdata_auto_alloc_size = sizeof(struct zynq_uart_platdata),
 	.probe = zynq_serial_probe,
 	.ops	= &zynq_serial_ops,
-	.flags = DM_FLAG_PRE_RELOC,
 };
 
 #ifdef CONFIG_DEBUG_UART_ZYNQ