drivers: Initialize resource entry to zero

I/O resource descriptor, 'desc' in struct resource, needs to be
initialized to zero by default.  Some drivers call kmalloc() to
allocate a resource entry, but do not initialize it to zero by
memset().  Change these drivers to call kzalloc(), instead.

Signed-off-by: Toshi Kani <toshi.kani@hpe.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Alexandre Bounine <alexandre.bounine@idt.com>
Acked-by: Helge Deller <deller@gmx.de>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Simon Horman <horms+renesas@verge.net.au>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Luis R. Rodriguez <mcgrof@suse.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Toshi Kani <toshi.kani@hp.com>
Cc: linux-acpi@vger.kernel.org
Cc: linux-arch@vger.kernel.org
Cc: linux-mm <linux-mm@kvack.org>
Cc: linux-parisc@vger.kernel.org
Cc: linux-renesas-soc@vger.kernel.org
Cc: linux-sh@vger.kernel.org
Link: http://lkml.kernel.org/r/1453841853-11383-10-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>

diff --git a/drivers/acpi/acpi_platform.c b/drivers/acpi/acpi_platform.c
index 296b7a1..b6f7fa3 100644 (file)
--- a/drivers/acpi/acpi_platform.c
+++ b/drivers/acpi/acpi_platform.c
@@ -62,7 +62,7 @@ struct platform_device *acpi_create_platform_device(struct acpi_device *adev)
        if (count < 0) {
                return NULL;
        } else if (count > 0) {
-               resources = kmalloc(count * sizeof(struct resource),
+               resources = kzalloc(count * sizeof(struct resource),
                                    GFP_KERNEL);
                if (!resources) {
                        dev_err(&adev->dev, "No memory for resources\n");

diff --git a/drivers/parisc/eisa_enumerator.c b/drivers/parisc/eisa_enumerator.c
index a656d9e..21905fe 100644 (file)
--- a/drivers/parisc/eisa_enumerator.c
+++ b/drivers/parisc/eisa_enumerator.c
@@ -91,7 +91,7 @@ static int configure_memory(const unsigned char *buf,
        for (i=0;i<HPEE_MEMORY_MAX_ENT;i++) {
                c = get_8(buf+len);
                
-               if (NULL != (res = kmalloc(sizeof(struct resource), GFP_KERNEL))) {
+               if (NULL != (res = kzalloc(sizeof(struct resource), GFP_KERNEL))) {
                        int result;
                        
                        res->name = name;
@@ -183,7 +183,7 @@ static int configure_port(const unsigned char *buf, struct resource *io_parent,
        for (i=0;i<HPEE_PORT_MAX_ENT;i++) {
                c = get_8(buf+len);
                
-               if (NULL != (res = kmalloc(sizeof(struct resource), GFP_KERNEL))) {
+               if (NULL != (res = kzalloc(sizeof(struct resource), GFP_KERNEL))) {
                        res->name = board;
                        res->start = get_16(buf+len+1);
                        res->end = get_16(buf+len+1)+(c&HPEE_PORT_SIZE_MASK)+1;

diff --git a/drivers/rapidio/rio.c b/drivers/rapidio/rio.c
index d7b87c6..e220edc 100644 (file)
--- a/drivers/rapidio/rio.c
+++ b/drivers/rapidio/rio.c
@@ -117,7 +117,7 @@ int rio_request_inb_mbox(struct rio_mport *mport,
        if (mport->ops->open_inb_mbox == NULL)
                goto out;
 
-       res = kmalloc(sizeof(struct resource), GFP_KERNEL);
+       res = kzalloc(sizeof(struct resource), GFP_KERNEL);
 
        if (res) {
                rio_init_mbox_res(res, mbox, mbox);
@@ -185,7 +185,7 @@ int rio_request_outb_mbox(struct rio_mport *mport,
        if (mport->ops->open_outb_mbox == NULL)
                goto out;
 
-       res = kmalloc(sizeof(struct resource), GFP_KERNEL);
+       res = kzalloc(sizeof(struct resource), GFP_KERNEL);
 
        if (res) {
                rio_init_mbox_res(res, mbox, mbox);
@@ -285,7 +285,7 @@ int rio_request_inb_dbell(struct rio_mport *mport,
 {
        int rc = 0;
 
-       struct resource *res = kmalloc(sizeof(struct resource), GFP_KERNEL);
+       struct resource *res = kzalloc(sizeof(struct resource), GFP_KERNEL);
 
        if (res) {
                rio_init_dbell_res(res, start, end);
@@ -360,7 +360,7 @@ int rio_release_inb_dbell(struct rio_mport *mport, u16 start, u16 end)
 struct resource *rio_request_outb_dbell(struct rio_dev *rdev, u16 start,
                                        u16 end)
 {
-       struct resource *res = kmalloc(sizeof(struct resource), GFP_KERNEL);
+       struct resource *res = kzalloc(sizeof(struct resource), GFP_KERNEL);
 
        if (res) {
                rio_init_dbell_res(res, start, end);

diff --git a/drivers/sh/superhyway/superhyway.c b/drivers/sh/superhyway/superhyway.c
index 2d9e7f3..bb1fb77 100644 (file)
--- a/drivers/sh/superhyway/superhyway.c
+++ b/drivers/sh/superhyway/superhyway.c
@@ -66,7 +66,7 @@ int superhyway_add_device(unsigned long base, struct superhyway_device *sdev,
        superhyway_read_vcr(dev, base, &dev->vcr);
 
        if (!dev->resource) {
-               dev->resource = kmalloc(sizeof(struct resource), GFP_KERNEL);
+               dev->resource = kzalloc(sizeof(struct resource), GFP_KERNEL);
                if (!dev->resource) {
                        kfree(dev);
                        return -ENOMEM;