linux-kernel - [PATCH 5.19 0606/1157] fpga: altera-pr-ip: fix unsigned comparison with less than zero

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Date:   Mon, 15 Aug 2022 19:59:22 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Tom Rix <trix@...hat.com>,
        Xu Yilun <yilun.xu@...el.com>,
        Marco Pagani <marpagan@...hat.com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.19 0606/1157] fpga: altera-pr-ip: fix unsigned comparison with less than zero

From: Marco Pagani <marpagan@...hat.com>

[ Upstream commit 2df84a757d87fd62869fc401119d429735377ec5 ]

Fix the "comparison with less than zero" warning reported by
cppcheck for the unsigned (size_t) parameter count of the
alt_pr_fpga_write() function.

Fixes: d201cc17a8a3 ("fpga pr ip: Core driver support for Altera Partial Reconfiguration IP")
Reviewed-by: Tom Rix <trix@...hat.com>
Acked-by: Xu Yilun <yilun.xu@...el.com>
Signed-off-by: Marco Pagani <marpagan@...hat.com>
Link: https://lore.kernel.org/r/20220609140520.42662-1-marpagan@redhat.com
Signed-off-by: Xu Yilun <yilun.xu@...el.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/fpga/altera-pr-ip-core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/fpga/altera-pr-ip-core.c b/drivers/fpga/altera-pr-ip-core.c
index be0667968d33..df8671af4a92 100644
--- a/drivers/fpga/altera-pr-ip-core.c
+++ b/drivers/fpga/altera-pr-ip-core.c
@@ -108,7 +108,7 @@ static int alt_pr_fpga_write(struct fpga_manager *mgr, const char *buf,
 	u32 *buffer_32 = (u32 *)buf;
 	size_t i = 0;
 
-	if (count <= 0)
+	if (!count)
 		return -EINVAL;
 
 	/* Write out the complete 32-bit chunks */
-- 
2.35.1