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firmware: allocate firmware id dynamically

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The firmware loader has a statically allocated 30 bytes long string for
the firmware id (a.k.a. the firmware file name). There is no reason why
we couldnt allocate it dynamically, and avoid having restrictions on the
firmware names lengths.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Cc: Marcel Holtmann <holtmann@linux.intel.com>
Cc: Zhu Yi <yi.zhu@intel.com>,
Cc: John Linville <linville@tuxdriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Samuel Ortiz 2009-05-27 00:49:31 +02:00 committed by Greg Kroah-Hartman
parent 7fcab09979
commit 976821d756
1 changed files with 12 additions and 4 deletions
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16
drivers/base/firmware_class.c
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@ -40,7 +40,7 @@ static int loading_timeout = 60; /* In seconds */
static DEFINE_MUTEX(fw_lock);
struct firmware_priv {
char fw_id[FIRMWARE_NAME_MAX];
char *fw_id;
struct completion completion;
struct bin_attribute attr_data;
struct firmware *fw;
@ -355,6 +355,7 @@ static void fw_dev_release(struct device *dev)
for (i = 0; i < fw_priv->nr_pages; i++)
__free_page(fw_priv->pages[i]);
kfree(fw_priv->pages);
kfree(fw_priv->fw_id);
kfree(fw_priv);
put_device(dev);
@ -386,7 +387,13 @@ static int fw_register_device(struct device **dev_p, const char *fw_name,
init_completion(&fw_priv->completion);
fw_priv->attr_data = firmware_attr_data_tmpl;
strlcpy(fw_priv->fw_id, fw_name, FIRMWARE_NAME_MAX);
fw_priv->fw_id = kstrdup(fw_name, GFP_KERNEL);
if (!fw_priv->fw_id) {
dev_err(device, "%s: Firmware name allocation failed\n",
__func__);
retval = -ENOMEM;
goto error_kfree;
}
fw_priv->timeout.function = firmware_class_timeout;
fw_priv->timeout.data = (u_long) fw_priv;
@ -401,14 +408,15 @@ static int fw_register_device(struct device **dev_p, const char *fw_name,
if (retval) {
dev_err(device, "%s: device_register failed\n", __func__);
put_device(f_dev);
goto error_kfree1;
goto error_kfree_fw_id;
}
*dev_p = f_dev;
return 0;
error_kfree_fw_id:
kfree(fw_priv->fw_id);
error_kfree:
kfree(f_dev);
error_kfree1:
kfree(fw_priv);
return retval;
}