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dev_request_mem_region doesn't work properly one some SoCs on which
PTR_ERR() values clash with valid return values from dev_request_mem_region.
Replace them with dev_request_mem_resource where possible.
This patch has been generated with the following semantic patch:
// <smpl>
@@
expression d;
expression n;
expression io;
identifier func;
@@
func(...) {
+struct resource *iores;
<+...
-io = dev_request_mem_region(d, n);
-if (IS_ERR(io)) {
+iores = dev_request_mem_resource(d, n);
+if (IS_ERR(iores)) {
...
- return PTR_ERR(io);
-}
+ return PTR_ERR(iores);
+}
+io = IOMEM(iores->start);
...+>
}
@@
expression d;
expression n;
expression io;
identifier func;
@@
func(...) {
+struct resource *iores;
<+...
-io = dev_request_mem_region(d, n);
-if (IS_ERR(io)) {
+iores = dev_request_mem_resource(d, n);
+if (IS_ERR(iores))
- return PTR_ERR(io);
-}
+ return PTR_ERR(iores);
+io = IOMEM(iores->start);
...+>
}
@@
expression d;
expression n;
expression io;
identifier func;
@@
func(...) {
+struct resource *iores;
<+...
-io = dev_request_mem_region(d, n);
-if (IS_ERR(io)) {
- ret = PTR_ERR(io);
+iores = dev_request_mem_resource(d, n);
+if (IS_ERR(iores)) {
+ ret = PTR_ERR(iores);
...
}
+io = IOMEM(iores->start);
...+>
}
@@
expression d;
expression n;
expression io;
identifier func;
@@
func(...) {
+struct resource *iores;
<+...
-io = dev_request_mem_region(d, n);
+iores = dev_request_mem_resource(d, n);
+if (IS_ERR(iores))
+ return PTR_ERR(iores);
+io = IOMEM(iores->start);
...+>
}
@@
identifier func;
@@
func(...) {
<+...
struct resource *iores;
-struct resource *iores;
...+>
}
// </smpl>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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dev_request_mem_region returns an ERR_PTR, fix places which check for a
NULL pointer instead. This patch has been generated with this semantic
patch, written by me and improved by Andrey Smirnov:
// <smpl>
@@
expression e;
expression e1;
@@
e = dev_request_mem_region(...);
...
-if (!e)
- return e1;
+if (IS_ERR(e))
+ return PTR_ERR(e);
@ rule1 @
expression e;
@@
e = dev_request_mem_region(...);
@@
expression rule1.e;
identifier ret, label;
constant errno;
@@
if (!e) {
...
(
- ret = -errno;
+ ret = PTR_ERR(e);
...
goto label;
|
- return -errno;
+ return PTR_ERR(e);
)
}
@depends on rule1@
expression rule1.e;
@@
- if (e == NULL)
+ if (IS_ERR(e))
{
...
}
// </smpl>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
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Newer Marvell MVEBU SoC like Armada 370/XP have an additional core
clock divider for e.g. NAND clock. Add the corresponding driver based
on the Linux driver.
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Since 2011 barebox' of_device_id struct uses unsigned long type for data field:
struct of_device_id {
char *compatible;
unsigned long data;
};
Almost always struct of_device_id.data field are used as pointer
and need 'unsigned long' casting.
E.g. see 'git grep -A 4 of_device_id drivers/' output:
drivers/ata/sata-imx.c:static __maybe_unused struct of_device_id imx_sata_dt_ids[] = {
drivers/ata/sata-imx.c- {
drivers/ata/sata-imx.c- .compatible = "fsl,imx6q-ahci",
drivers/ata/sata-imx.c- .data = (unsigned long)&data_imx6,
drivers/ata/sata-imx.c- }, {
Here is of_device_id struct in linux kernel v4.0:
struct of_device_id {
char name[32];
char type[32];
char compatible[128];
const void *data;
};
Changing of_device_id.data type to 'const void *data' will increase
barebox' linux kernel compatibility and decrease number of 'unsigned
long' casts.
Part of the patch was done using the 'coccinelle' tool with the
following semantic patch:
@rule1@
identifier dev;
identifier type;
identifier func;
@@
func(...) {
<...
- dev_get_drvdata(dev, (unsigned long *)&type)
+ dev_get_drvdata(dev, (const void **)&type)
...>
}
@rule2@
identifier dev;
identifier type;
identifier func;
identifier data;
@@
func(...) {
<...
- dev_get_drvdata(dev, (unsigned long *)&type->data)
+ dev_get_drvdata(dev, (const void **)&type->data)
...>
}
Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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For all users fix or add the error check.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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This fixes Armada 370 TCLK frequencies that are off by
a factor of 10.
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
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This adds a clk_gate_flags argument to clock gate creation functions
to allow the introduction of new clock gate modifiers.
Signed-off-by: Beniamino Galvani <b.galvani@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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This adds of_clk_providers for core clocks and clock gates found on
Marvell MVEBU SoCs (Armada 370, Armada XP, Dove, and Kirkwood).
It is based on Linux clock providers with clock flags removed, as they
are not used on Barebox.
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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