linux-kernel - Re: [SCSI] esas2r: ATTO Technology ExpressSAS 6G SAS/SATA RAID Adapter Driver

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Date:	Wed, 4 Sep 2013 19:27:25 -0400
From:	Dave Jones <davej@...hat.com>
To:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Cc:	linux-scsi@...r.kernel.org, bgrove@...otech.com
Subject: Re: [SCSI] esas2r: ATTO Technology ExpressSAS 6G SAS/SATA RAID
 Adapter Driver

 > +struct esas2r_adapter {
 > +	struct esas2r_target targetdb[ESAS2R_MAX_TARGETS];
 > +	struct esas2r_target *targetdb_end;
 ... 
 > +	u8 fw_coredump_buff[ESAS2R_FWCOREDUMP_SZ];


 > +void esas2r_reset_chip(struct esas2r_adapter *a)
 > +{
 > +	if (!esas2r_is_adapter_present(a))
 > +		return;
 > +
 > +	/*
 > +	 * Before we reset the chip, save off the VDA core dump.  The VDA core
 > +	 * dump is located in the upper 512KB of the onchip SRAM.  Make sure
 > +	 * to not overwrite a previous crash that was saved.
 > +	 */
 > +	if ((a->flags2 & AF2_COREDUMP_AVAIL)
 > +	    && !(a->flags2 & AF2_COREDUMP_SAVED)
 > +	    && a->fw_coredump_buff) {
 > +		esas2r_read_mem_block(a,
 > +				      a->fw_coredump_buff,
 > +				      MW_DATA_ADDR_SRAM + 0x80000,
 > +				      ESAS2R_FWCOREDUMP_SZ);

Comparing an array (fw_coredump_buff) to null probably isn't what you intended here.

	Dave
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