Subject: [PATCH 07/11] powerpc/powernv/npu: Simplify pnv_npu_try_dma_set_bypass() loop

From: Reza Arbab <[email-masked]>
Date: Wed, 30 Oct 2019 11:59:56 -0500

Write this loop more compactly to improve readability.

Signed-off-by: Reza Arbab <[email-masked]>
---
 arch/powerpc/platforms/powernv/npu-dma.c | 9 ++-------
 1 file changed, 2 insertions(+), 7 deletions(-)

diff --git a/arch/powerpc/platforms/powernv/npu-dma.c b/arch/powerpc/platforms/powernv/npu-dma.c
index a6b8c7ad36e4..a77ce7d71634 100644
--- a/arch/powerpc/platforms/powernv/npu-dma.c
+++ b/arch/powerpc/platforms/powernv/npu-dma.c
@@ -261,12 +261,12 @@ static int pnv_npu_dma_set_bypass(struct pnv_ioda_pe *npe)
 void pnv_npu_try_dma_set_bypass(struct pci_dev *gpdev, u64 mask)
 {
 	struct pnv_ioda_pe *gpe = pnv_ioda_get_pe(gpdev);
-	int i;
 	struct pnv_phb *phb;
 	struct pci_dn *pdn;
 	struct pnv_ioda_pe *npe;
 	struct pci_dev *npdev;
 	bool bypass;
+	int i = 0;
 
 	if (!gpe)
 		return;
@@ -274,12 +274,7 @@ void pnv_npu_try_dma_set_bypass(struct pci_dev *gpdev, u64 mask)
 	/* We only do bypass if it's enabled on the linked device */
 	bypass = pnv_ioda_pe_iommu_bypass_supported(gpe, mask);
 
-	for (i = 0; ; ++i) {
-		npdev = pnv_pci_get_npu_dev(gpdev, i);
-
-		if (!npdev)
-			break;
-
+	while ((npdev = pnv_pci_get_npu_dev(gpdev, i++))) {
 		pdn = pci_get_pdn(npdev);
 		if (WARN_ON(!pdn || pdn->pe_number == IODA_INVALID_PE))
 			return;
-- 
1.8.3.1