Patchwork [v2,04/27] ARM: pci: Allow passing per-controller private data

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Submitter Thomas Petazzoni
Date Jan. 28, 2013, 6:56 p.m.
Message ID <1359399397-29729-5-git-send-email-thomas.petazzoni@free-electrons.com>
Download mbox | patch
Permalink /patch/216306/
State Not Applicable
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Comments

Thomas Petazzoni - Jan. 28, 2013, 6:56 p.m.
From: Thierry Reding <thierry.reding@avionic-design.de>

In order to allow drivers to specify private data for each controller,
this commit adds a private_data field to the struct hw_pci. This field
is an array of nr_controllers pointers that will be used to initialize
the private_data field of the corresponding controller's pci_sys_data
structure.

Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
---
 arch/arm/include/asm/mach/pci.h |    1 +
 arch/arm/kernel/bios32.c        |    3 +++
 2 files changed, 4 insertions(+)

Patch

diff --git a/arch/arm/include/asm/mach/pci.h b/arch/arm/include/asm/mach/pci.h
index db9fedb..5cf2e97 100644
--- a/arch/arm/include/asm/mach/pci.h
+++ b/arch/arm/include/asm/mach/pci.h
@@ -23,6 +23,7 @@  struct hw_pci {
 #endif
 	struct pci_ops	*ops;
 	int		nr_controllers;
+	void		**private_data;
 	int		(*setup)(int nr, struct pci_sys_data *);
 	struct pci_bus *(*scan)(int nr, struct pci_sys_data *);
 	void		(*preinit)(void);
diff --git a/arch/arm/kernel/bios32.c b/arch/arm/kernel/bios32.c
index 379cf32..5401645 100644
--- a/arch/arm/kernel/bios32.c
+++ b/arch/arm/kernel/bios32.c
@@ -464,6 +464,9 @@  static void __init pcibios_init_hw(struct hw_pci *hw, struct list_head *head)
 		sys->map_irq = hw->map_irq;
 		INIT_LIST_HEAD(&sys->resources);
 
+		if (hw->private_data)
+			sys->private_data = hw->private_data[nr];
+
 		ret = hw->setup(nr, sys);
 
 		if (ret > 0) {