From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Google-Smtp-Source: AB8JxZriKngxrRBC/7dVE47esxQpxFtadojhJ/raG3ycwTqcdzks+52R/0PoKpPL9zEK2VY+4ed8 ARC-Seal: i=1; a=rsa-sha256; t=1525116394; cv=none; d=google.com; s=arc-20160816; b=ZhklzBZgitIed9lB42X17KXXw9w0pbZwJ0gsZCisM+ob8ixJC/zSG0R0XtGiN5y1OM Xt9IOHbkTQETPDWClwKZ1s4HPDP5nWCkGJGYWI/wc7MAfvoJ52cV3mnv9IRJFt4P8okw +Ijerq2/rOx4CqUTKLvl+sox6zEegsEV2nrkgoy20nqQrKvODJxqWuXOZxd5F2TW+Jcu geusufGV0JJwn4Rx9+XXTIXowTqGK7hogUfbH7IUMpdLvsnQywHhrWmlpXwlBdUfDWHT SRIOf/RnHbeXt0i+Pn+niyv4XL662da0ImejRDCoVqXWm6+1Lhw3KDemOAG1Vt5Fkpji mTYQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=mime-version:user-agent:references:in-reply-to:message-id:date :subject:cc:to:from:dmarc-filter:arc-authentication-results; bh=GLPpa/+S51hIFVYp4rjztYiFjHKzW0REFC7uhSpLa04=; b=K2V+ojAbQfI6RBuXYaJu0ms/d9PNBV1U46EApZ5MzGybkvOfByNJ9PnLF6ypEBwWFm A43+SqVVJps0i5Mlv4S7PfgWiyRJ9v5syKGOC+Cq10bxJmbwKMOsV1yjkP+1TFfk4IUY lIXg3HJypkYyUprjZxssEP8q8XoUYnMmGKkpAfsZb0059LYQrj26iAHHQdwVDjSzgx4g dCZI0RYHp9nRUa/zctj3o/JuM7hmGuh67QBh1Hx/3GkBJj7KiQ6BSPpnC7I96XZ7x7Sm yJkWcAUU4KYm3M0+SCTsW7aSvuTmxFKjTbKyrKF+TNWRTQSR+QCcsbOvDAJY8diLbPkc WUJA== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of srs0=k66p=ht=linuxfoundation.org=gregkh@kernel.org designates 198.145.29.99 as permitted sender) smtp.mailfrom=SRS0=K66P=HT=linuxfoundation.org=gregkh@kernel.org Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of srs0=k66p=ht=linuxfoundation.org=gregkh@kernel.org designates 198.145.29.99 as permitted sender) smtp.mailfrom=SRS0=K66P=HT=linuxfoundation.org=gregkh@kernel.org DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 22F6422DAE Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linuxfoundation.org Authentication-Results: mail.kernel.org; spf=fail smtp.mailfrom=gregkh@linuxfoundation.org From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Joakim Tjernlund , Richard Weinberger , Boris Brezillon Subject: [PATCH 4.9 37/61] mtd: cfi: cmdset_0001: Workaround Micron Erase suspend bug. Date: Mon, 30 Apr 2018 12:24:40 -0700 Message-Id: <20180430183954.482062431@linuxfoundation.org> X-Mailer: git-send-email 2.17.0 In-Reply-To: <20180430183951.312721450@linuxfoundation.org> References: <20180430183951.312721450@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-LABELS: =?utf-8?b?IlxcU2VudCI=?= X-GMAIL-THRID: =?utf-8?q?1599200283537847620?= X-GMAIL-MSGID: =?utf-8?q?1599200448778839234?= X-Mailing-List: linux-kernel@vger.kernel.org List-ID: 4.9-stable review patch. If anyone has any objections, please let me know. ------------------ From: Joakim Tjernlund commit 46a16a2283f9e678a4e26829175e0c37a5191860 upstream. Some Micron chips does not work well wrt Erase suspend for boot blocks. This avoids the issue by not allowing Erase suspend for the boot blocks for the 28F00AP30(1GBit) chip. Signed-off-by: Joakim Tjernlund Cc: Reviewed-by: Richard Weinberger Signed-off-by: Boris Brezillon Signed-off-by: Greg Kroah-Hartman --- drivers/mtd/chips/cfi_cmdset_0001.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) --- a/drivers/mtd/chips/cfi_cmdset_0001.c +++ b/drivers/mtd/chips/cfi_cmdset_0001.c @@ -45,6 +45,7 @@ #define I82802AB 0x00ad #define I82802AC 0x00ac #define PF38F4476 0x881c +#define M28F00AP30 0x8963 /* STMicroelectronics chips */ #define M50LPW080 0x002F #define M50FLW080A 0x0080 @@ -375,6 +376,17 @@ static void cfi_fixup_major_minor(struct extp->MinorVersion = '1'; } +static int cfi_is_micron_28F00AP30(struct cfi_private *cfi, struct flchip *chip) +{ + /* + * Micron(was Numonyx) 1Gbit bottom boot are buggy w.r.t + * Erase Supend for their small Erase Blocks(0x8000) + */ + if (cfi->mfr == CFI_MFR_INTEL && cfi->id == M28F00AP30) + return 1; + return 0; +} + static inline struct cfi_pri_intelext * read_pri_intelext(struct map_info *map, __u16 adr) { @@ -836,6 +848,11 @@ static int chip_ready (struct map_info * chip->in_progress_block_addr) goto sleep; + /* do not suspend small EBs, buggy Micron Chips */ + if (cfi_is_micron_28F00AP30(cfi, chip) && + (chip->in_progress_block_mask == ~(0x8000-1))) + goto sleep; + /* Erase suspend */ map_write(map, CMD(0xB0), chip->in_progress_block_addr);