linux-kernel - [PATCH] staging: rtl8192e: Use min_t/max

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Message-ID: <Y2LxC2kziM1TznhO@qemulion>
Date:   Thu, 3 Nov 2022 04:06:59 +0530
From:   Deepak R Varma <drv@...lo.com>
To:     outreachy@...ts.linux.dev,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-staging@...ts.linux.dev, linux-kernel@...r.kernel.org
Subject: [PATCH] staging: rtl8192e: Use min_t/max_t macros for variable
 comparison

Simplify code by using min_t and max_t helper macros in place of lengthy
if/else block oriented logical evaluation and value assignment. This
issue is identified by coccicheck using the minmax.cocci file.

Use the *_t variants of min/max macros to avoid compiler warnings about
data typecast.
Also, use u32 as type for min_t macro to avoid any truncation of data
associated with enum constant HT_AGG_SIZE_32K.

Signed-off-by: Deepak R Varma <drv@...lo.com>
---
 drivers/staging/rtl8192e/rtl819x_HTProc.c | 13 ++++---------
 1 file changed, 4 insertions(+), 9 deletions(-)

diff --git a/drivers/staging/rtl8192e/rtl819x_HTProc.c b/drivers/staging/rtl8192e/rtl819x_HTProc.c
index 62aa8e893c34..ccb86660ab48 100644
--- a/drivers/staging/rtl8192e/rtl819x_HTProc.c
+++ b/drivers/staging/rtl8192e/rtl819x_HTProc.c
@@ -587,17 +587,12 @@ void HTOnAssocRsp(struct rtllib_device *ieee)
 			else
 				pHTInfo->CurrentAMPDUFactor = HT_AGG_SIZE_64K;
 		} else {
-			if (pPeerHTCap->MaxRxAMPDUFactor < HT_AGG_SIZE_32K)
-				pHTInfo->CurrentAMPDUFactor =
-						 pPeerHTCap->MaxRxAMPDUFactor;
-			else
-				pHTInfo->CurrentAMPDUFactor = HT_AGG_SIZE_32K;
+			pHTInfo->CurrentAMPDUFactor = min_t(u32, pPeerHTCap->MaxRxAMPDUFactor,
+							    HT_AGG_SIZE_32K);
 		}
 	}
-	if (pHTInfo->MPDU_Density > pPeerHTCap->MPDUDensity)
-		pHTInfo->current_mpdu_density = pHTInfo->MPDU_Density;
-	else
-		pHTInfo->current_mpdu_density = pPeerHTCap->MPDUDensity;
+	pHTInfo->current_mpdu_density = max_t(u8, pHTInfo->MPDU_Density,
+					      pPeerHTCap->MPDUDensity);
 	if (pHTInfo->iot_action & HT_IOT_ACT_TX_USE_AMSDU_8K) {
 		pHTInfo->bCurrentAMPDUEnable = false;
 		pHTInfo->ForcedAMSDUMode = HT_AGG_FORCE_ENABLE;
--
2.34.1