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kernel: backport bcma patches that improve printing functions
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Updated printing functions use dev_* helpers to provide more meaningful
messages.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
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Rafał Miłecki committed Jan 10, 2019
1 parent ef1efa7 commit 34696ce
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Showing 5 changed files with 471 additions and 1 deletion.
2 changes: 1 addition & 1 deletion ...inux/brcm47xx/patches-4.14/901-Revert-bcma-switch-GPIO-portions-to-use-GPIOLIB_IRQC.patch
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Expand Up @@ -188,7 +188,7 @@ Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
chip->direction_input = bcma_gpio_direction_input;
chip->direction_output = bcma_gpio_direction_output;
- chip->owner = THIS_MODULE;
- chip->parent = bcma_bus_get_host_dev(bus);
- chip->parent = bus->dev;
+#if IS_BUILTIN(CONFIG_BCM47XX) || IS_BUILTIN(CONFIG_ARCH_BCM_5301X)
+ chip->to_irq = bcma_gpio_to_irq;
+#endif
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199 changes: 199 additions & 0 deletions ...generic/backport-4.14/080-v5.1-0001-bcma-keep-a-direct-pointer-to-the-struct-device.patch
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@@ -0,0 +1,199 @@
From 5a1c18b761ddb299a06746948b9ec2814b04fa92 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
Date: Wed, 2 Jan 2019 00:00:01 +0100
Subject: [PATCH] bcma: keep a direct pointer to the struct device
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Accessing struct device is pretty useful/common so having a direct
pointer:
1) Simplifies some code
2) Makes bcma_bus_get_host_dev() unneeded
3) Allows further improvements like using dev_* printing helpers

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
---
drivers/bcma/bcma_private.h | 1 -
drivers/bcma/driver_gpio.c | 2 +-
drivers/bcma/host_pci.c | 2 ++
drivers/bcma/host_soc.c | 4 ++--
drivers/bcma/main.c | 45 +++++++++----------------------------
include/linux/bcma/bcma.h | 11 +++------
6 files changed, 18 insertions(+), 47 deletions(-)

--- a/drivers/bcma/bcma_private.h
+++ b/drivers/bcma/bcma_private.h
@@ -33,7 +33,6 @@ int __init bcma_bus_early_register(struc
int bcma_bus_suspend(struct bcma_bus *bus);
int bcma_bus_resume(struct bcma_bus *bus);
#endif
-struct device *bcma_bus_get_host_dev(struct bcma_bus *bus);

/* scan.c */
void bcma_detect_chip(struct bcma_bus *bus);
--- a/drivers/bcma/driver_gpio.c
+++ b/drivers/bcma/driver_gpio.c
@@ -183,7 +183,7 @@ int bcma_gpio_init(struct bcma_drv_cc *c
chip->direction_input = bcma_gpio_direction_input;
chip->direction_output = bcma_gpio_direction_output;
chip->owner = THIS_MODULE;
- chip->parent = bcma_bus_get_host_dev(bus);
+ chip->parent = bus->dev;
#if IS_BUILTIN(CONFIG_OF)
chip->of_node = cc->core->dev.of_node;
#endif
--- a/drivers/bcma/host_pci.c
+++ b/drivers/bcma/host_pci.c
@@ -196,6 +196,8 @@ static int bcma_host_pci_probe(struct pc
goto err_pci_release_regions;
}

+ bus->dev = &dev->dev;
+
/* Map MMIO */
err = -ENOMEM;
bus->mmio = pci_iomap(dev, 0, ~0UL);
--- a/drivers/bcma/host_soc.c
+++ b/drivers/bcma/host_soc.c
@@ -179,7 +179,6 @@ int __init bcma_host_soc_register(struct
/* Host specific */
bus->hosttype = BCMA_HOSTTYPE_SOC;
bus->ops = &bcma_host_soc_ops;
- bus->host_pdev = NULL;

/* Initialize struct, detect chip */
bcma_init_bus(bus);
@@ -213,6 +212,8 @@ static int bcma_host_soc_probe(struct pl
if (!bus)
return -ENOMEM;

+ bus->dev = dev;
+
/* Map MMIO */
bus->mmio = of_iomap(np, 0);
if (!bus->mmio)
@@ -221,7 +222,6 @@ static int bcma_host_soc_probe(struct pl
/* Host specific */
bus->hosttype = BCMA_HOSTTYPE_SOC;
bus->ops = &bcma_host_soc_ops;
- bus->host_pdev = pdev;

/* Initialize struct, detect chip */
bcma_init_bus(bus);
--- a/drivers/bcma/main.c
+++ b/drivers/bcma/main.c
@@ -223,8 +223,8 @@ unsigned int bcma_core_irq(struct bcma_d
mips_irq = bcma_core_mips_irq(core);
return mips_irq <= 4 ? mips_irq + 2 : 0;
}
- if (bus->host_pdev)
- return bcma_of_get_irq(&bus->host_pdev->dev, core, num);
+ if (bus->dev)
+ return bcma_of_get_irq(bus->dev, core, num);
return 0;
case BCMA_HOSTTYPE_SDIO:
return 0;
@@ -239,18 +239,18 @@ void bcma_prepare_core(struct bcma_bus *
core->dev.release = bcma_release_core_dev;
core->dev.bus = &bcma_bus_type;
dev_set_name(&core->dev, "bcma%d:%d", bus->num, core->core_index);
- core->dev.parent = bcma_bus_get_host_dev(bus);
- if (core->dev.parent)
- bcma_of_fill_device(core->dev.parent, core);
+ core->dev.parent = bus->dev;
+ if (bus->dev)
+ bcma_of_fill_device(bus->dev, core);

switch (bus->hosttype) {
case BCMA_HOSTTYPE_PCI:
- core->dma_dev = &bus->host_pci->dev;
+ core->dma_dev = bus->dev;
core->irq = bus->host_pci->irq;
break;
case BCMA_HOSTTYPE_SOC:
- if (IS_ENABLED(CONFIG_OF) && bus->host_pdev) {
- core->dma_dev = &bus->host_pdev->dev;
+ if (IS_ENABLED(CONFIG_OF) && bus->dev) {
+ core->dma_dev = bus->dev;
} else {
core->dev.dma_mask = &core->dev.coherent_dma_mask;
core->dma_dev = &core->dev;
@@ -261,28 +261,6 @@ void bcma_prepare_core(struct bcma_bus *
}
}

-struct device *bcma_bus_get_host_dev(struct bcma_bus *bus)
-{
- switch (bus->hosttype) {
- case BCMA_HOSTTYPE_PCI:
- if (bus->host_pci)
- return &bus->host_pci->dev;
- else
- return NULL;
- case BCMA_HOSTTYPE_SOC:
- if (bus->host_pdev)
- return &bus->host_pdev->dev;
- else
- return NULL;
- case BCMA_HOSTTYPE_SDIO:
- if (bus->host_sdio)
- return &bus->host_sdio->dev;
- else
- return NULL;
- }
- return NULL;
-}
-
void bcma_init_bus(struct bcma_bus *bus)
{
mutex_lock(&bcma_buses_mutex);
@@ -402,7 +380,6 @@ int bcma_bus_register(struct bcma_bus *b
{
int err;
struct bcma_device *core;
- struct device *dev;

/* Scan for devices (cores) */
err = bcma_bus_scan(bus);
@@ -425,10 +402,8 @@ int bcma_bus_register(struct bcma_bus *b
bcma_core_pci_early_init(&bus->drv_pci[0]);
}

- dev = bcma_bus_get_host_dev(bus);
- if (dev) {
- of_platform_default_populate(dev->of_node, NULL, dev);
- }
+ if (bus->dev)
+ of_platform_default_populate(bus->dev->of_node, NULL, bus->dev);

/* Cores providing flash access go before SPROM init */
list_for_each_entry(core, &bus->cores, list) {
--- a/include/linux/bcma/bcma.h
+++ b/include/linux/bcma/bcma.h
@@ -332,6 +332,8 @@ extern int bcma_arch_register_fallback_s
struct ssb_sprom *out));

struct bcma_bus {
+ struct device *dev;
+
/* The MMIO area. */
void __iomem *mmio;

@@ -339,14 +341,7 @@ struct bcma_bus {

enum bcma_hosttype hosttype;
bool host_is_pcie2; /* Used for BCMA_HOSTTYPE_PCI only */
- union {
- /* Pointer to the PCI bus (only for BCMA_HOSTTYPE_PCI) */
- struct pci_dev *host_pci;
- /* Pointer to the SDIO device (only for BCMA_HOSTTYPE_SDIO) */
- struct sdio_func *host_sdio;
- /* Pointer to platform device (only for BCMA_HOSTTYPE_SOC) */
- struct platform_device *host_pdev;
- };
+ struct pci_dev *host_pci; /* PCI bus pointer (BCMA_HOSTTYPE_PCI only) */

struct bcma_chipinfo chipinfo;

36 changes: 36 additions & 0 deletions target/linux/generic/backport-4.14/080-v5.1-0002-bcma-use-dev_-printing-functions.patch
View file
@@ -0,0 +1,36 @@
From 777bc4801a6868fcbff09ffb6e30f023e7c5ed38 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
Date: Wed, 2 Jan 2019 00:00:02 +0100
Subject: [PATCH] bcma: use dev_* printing functions
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

It provides more meaningful messages.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
---
drivers/bcma/bcma_private.h | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)

--- a/drivers/bcma/bcma_private.h
+++ b/drivers/bcma/bcma_private.h
@@ -10,13 +10,13 @@
#include <linux/delay.h>

#define bcma_err(bus, fmt, ...) \
- pr_err("bus%d: " fmt, (bus)->num, ##__VA_ARGS__)
+ dev_err((bus)->dev, "bus%d: " fmt, (bus)->num, ##__VA_ARGS__)
#define bcma_warn(bus, fmt, ...) \
- pr_warn("bus%d: " fmt, (bus)->num, ##__VA_ARGS__)
+ dev_warn((bus)->dev, "bus%d: " fmt, (bus)->num, ##__VA_ARGS__)
#define bcma_info(bus, fmt, ...) \
- pr_info("bus%d: " fmt, (bus)->num, ##__VA_ARGS__)
+ dev_info((bus)->dev, "bus%d: " fmt, (bus)->num, ##__VA_ARGS__)
#define bcma_debug(bus, fmt, ...) \
- pr_debug("bus%d: " fmt, (bus)->num, ##__VA_ARGS__)
+ dev_dbg((bus)->dev, "bus%d: " fmt, (bus)->num, ##__VA_ARGS__)

struct bcma_bus;

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