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ath10k: don't assume this is a PCI dev in generic code 

Not all devices using this driver are backed by a PCI device, so it's
not fair to assume 'to_pci_dev()' is valid. Fortunately, we only were
using this to convert straight back to a bare 'device', which means we
were only doing no-op pointer arithmetic, and not actually accessing
potentially out-of-bounds memory. But this is still bad practice.

Just use 'ar->dev' directly, since that's really all we're looking for.

Fixes: 209b2a68de ("ath10k: add platform regulatory domain support")
Signed-off-by: Brian Norris <briannorris@chromium.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This commit is contained in:
Brian Norris 2018-11-02 10:17:48 -07:00 committed by Kalle Valo
parent 2bd345cd2b
commit 79169f1486
1 changed files with 1 additions and 2 deletions
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3
drivers/net/wireless/ath/ath10k/mac.c
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@ -8317,7 +8317,6 @@ static u32 ath10k_mac_wrdd_get_mcc(struct ath10k *ar, union acpi_object *wrdd)
static int ath10k_mac_get_wrdd_regulatory(struct ath10k *ar, u16 *rd)
{
struct pci_dev __maybe_unused *pdev = to_pci_dev(ar->dev);
acpi_handle root_handle;
acpi_handle handle;
struct acpi_buffer wrdd = {ACPI_ALLOCATE_BUFFER, NULL};
@ -8325,7 +8324,7 @@ static int ath10k_mac_get_wrdd_regulatory(struct ath10k *ar, u16 *rd)
u32 alpha2_code;
char alpha2[3];
root_handle = ACPI_HANDLE(&pdev->dev);
root_handle = ACPI_HANDLE(ar->dev);
if (!root_handle)
return -EOPNOTSUPP;