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[216.228.112.21]) by smtp.gmail.com with ESMTPSA id ms14sm11163509pjb.15.2022.01.23.10.41.36 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 23 Jan 2022 10:41:37 -0800 (PST) From: Yury Norov To: Yury Norov , Andy Shevchenko , Rasmus Villemoes , Andrew Morton , =?utf-8?b?TWljaGHFgiBNaXJvc8WC?= =?utf-8?b?YXc=?= , Greg Kroah-Hartman , Peter Zijlstra , David Laight , Joe Perches , Dennis Zhou , Emil Renner Berthing , Nicholas Piggin , Matti Vaittinen , Alexey Klimov , linux-kernel@vger.kernel.org, Thierry Reding , Jonathan Hunter , Sowjanya Komatineni , Mauro Carvalho Chehab , linux-media@vger.kernel.org, linux-tegra@vger.kernel.org, linux-staging@lists.linux.dev Subject: [PATCH 35/54] drivers/staging: replace bitmap_weight with bitmap_weight_le for tegra-video Date: Sun, 23 Jan 2022 10:39:06 -0800 Message-Id: <20220123183925.1052919-36-yury.norov@gmail.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20220123183925.1052919-1-yury.norov@gmail.com> References: <20220123183925.1052919-1-yury.norov@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org X-LSpam-Score: -7.5 (-------) X-LSpam-Report: No, score=-7.5 required=5.0 tests=BAYES_00=-1.9,DKIM_SIGNED=0.1,DKIM_VALID=-0.1,DKIM_VALID_AU=-0.1,FREEMAIL_FORGED_FROMDOMAIN=0.001,FREEMAIL_FROM=0.001,HEADER_FROM_DIFFERENT_DOMAINS=0.5,MAILING_LIST_MULTI=-1,RCVD_IN_DNSWL_HI=-5 autolearn=ham autolearn_force=no tegra_channel_enum_format() calls bitmap_weight() to compare the weight of bitmap with a given number. We can do it more efficiently with bitmap_weight_le() because conditional bitmap_weight may stop traversing the bitmap earlier, as soon as condition is met. Signed-off-by: Yury Norov --- drivers/staging/media/tegra-video/vi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/staging/media/tegra-video/vi.c b/drivers/staging/media/tegra-video/vi.c index d1f43f465c22..4e79a80e9307 100644 --- a/drivers/staging/media/tegra-video/vi.c +++ b/drivers/staging/media/tegra-video/vi.c @@ -436,7 +436,7 @@ static int tegra_channel_enum_format(struct file *file, void *fh, if (!IS_ENABLED(CONFIG_VIDEO_TEGRA_TPG)) fmts_bitmap = chan->fmts_bitmap; - if (f->index >= bitmap_weight(fmts_bitmap, MAX_FORMAT_NUM)) + if (bitmap_weight_le(fmts_bitmap, MAX_FORMAT_NUM, f->index)) return -EINVAL; for (i = 0; i < f->index + 1; i++, index++)