HID: intel-ish-hid: ipc: Add check for pci_alloc_irq_vectors

[ Upstream commit 6baa4524027fd64d7ca524e1717c88c91a354b93 ]

Add a check for the return value of pci_alloc_irq_vectors() and return
error if it fails.

[jkosina@suse.com: reworded changelog based on Srinivas' suggestion]
Fixes: 74fbc7d371d9 ("HID: intel-ish-hid: add MSI interrupt support")
Signed-off-by: Chen Ni <nichen@iscas.ac.cn>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jiri Kosina <jkosina@suse.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/hid/intel-ish-hid/ipc/pci-ish.c b/drivers/hid/intel-ish-hid/ipc/pci-ish.c
index f491d8b4e24c7b39087bfc0a71db3b18d7cc596c..05134ee802778566ed0e1c39280661409fa8fa68 100644 (file)
--- a/drivers/hid/intel-ish-hid/ipc/pci-ish.c
+++ b/drivers/hid/intel-ish-hid/ipc/pci-ish.c
@@ -159,6 +159,11 @@ static int ish_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 
        /* request and enable interrupt */
        ret = pci_alloc_irq_vectors(pdev, 1, 1, PCI_IRQ_ALL_TYPES);
+       if (ret < 0) {
+               dev_err(dev, "ISH: Failed to allocate IRQ vectors\n");
+               return ret;
+       }
+
        if (!pdev->msi_enabled && !pdev->msix_enabled)
                irq_flag = IRQF_SHARED;